NanaWall SL73: Hurricane-Approved Folding System
Specifications, Performance, and Technical Details
Introduction
The SL73 is a monumentally-sized, thermally broken aluminum folding panel system designed to provide an opening glass wall or storefront up to 38' (11.5 m) wide (Florida Product Approval limit is max. width of 28' 8"). It is available in various configurations utilizing one to any number of panels. The running astragal design provides extra stability.
For benefits of all NanaWall systems, refer to the "General Introduction" section. For features common to aluminum folding systems, refer to the "Aluminum Folding Systems" Introduction.
For many applications, the SL73 provides hurricane protection that meets stringent hurricane code requirements and protects your property. With impact-rated glass, there is no need for unattractive and inconvenient shutters. The thermally broken aluminum profiles and insulated impact glass also meet many low energy code requirements.
Florida Product Approval #FL20107 - Hurricane and Impact Rated
In accordance with Florida Test Protocols TAS 201 (large missile impact), TAS 202 (structural pressure, air, water (higher weather performance only), forced entry), and TAS 203 (cyclic pressure), NanaWall Systems has successfully tested and passed the SL73 in both inswing and outswing applications. The results apply for all stacking configurations.
With panel sizes of 3' x 8', SL73 inswing with the higher weather performance sill achieved a DP rating of +70 psf / -100 psf. SL73 outswing with higher weather performance and SL73 inswing/outswing with saddle sill achieved DP ratings of +/- 70 psf.
With smaller panel sizes, higher DP ratings of up to +80 psf / -110 psf for inswing with a higher weather performance sill and +80 psf / -90 psf for outswing with a higher weather performance sill and inswing/outswing with a saddle sill are possible. Refer to the Design Windload Charts for possibilities.
- The SL73 inswing system with a higher weather performance or low profile saddle sill is approved with FL Product Approval #FL20107.1.
- The SL73 outswing system with a higher weather performance or low profile saddle sill is approved with FL Product Approval #FL20107.2.
High Ratings with AAMA 506 Hurricane Impact and AAMA/WDMA/CSA 101/I.S.2/A440 Tests
Units with panel sizes of 3' x 8' were tested per AAMA 506, "Voluntary Specifications for Hurricane Impact and Cycling Testing of Fenestration Products” and ASTM E1886 and ASTM E1996 with missile impacts corresponding to Missile Level D and Wind Zone 4.
- SL73 inswing with a Higher weather performance sill met the performance requirements for a +90 psf / -110 psf Design Pressure.
- SL73 outswing with a Higher weather performance sill and inswing/outswing with saddle sills met the performance requirements for a +/- 90 psf Design Pressure.
AAMA A440 test results for structural pressure, air, water, and forced entry were the same as Dade County Protocol TAS 202.
For detailed results, please see Performance pages.
High Ratings with Both Static and Dynamic Pressure Water Resistance Tests
- SL73 inswing/outswing with a Higher weather performance sill achieved a water rating of no leakage at 9 psf per ASTM E547/ E331 static water test.
- SL73 inswing with a Higher weather performance sill achieved a Performance Level 2 (no leakage more than allowable at 6-18 psf).
- SL73 outswing with a Higher weather performance sill achieved a Performance Level 1 (no leakage more than allowable at 5-15 psf) per AAMA 520 dynamic water test.
NFRC-Approved Thermal Performance
SL73 inswing and outswing models with all sill options have been rated, certified, and labeled in accordance with NFRC 100 and NFRC 200. With certain glass options, U-factor and SHGC values for certain climate zones can be met. See "Performance and Testing Results" section for more details.
Acoustical Performance
Although the SL73 system has not been tested for acoustical performance with impact glass, the SL70 (which has the same profiles) has been tested by an independent acoustic lab for acoustical performance. The SL70 with a recessed sill and insulated tempered STC 32 glass achieved STC and Rw values of 33, and with STC 43 insulated laminated glass achieved STC and Rw values of 41. Based on these results, the acoustical performance of the SL73 with insulated impact glass and with any of the sill options is estimated to be about STC 38.
Vandal-resistant / Bear-resistant
The same qualities that make the SL73 hurricane-resistant also make it vandal-resistant and bear-resistant.
Technical Description & Features
Dry Glazed Impact System
The SL73 is dry glazed. The new improved glazing system for impact glass without the need of wet glazing with silicone makes a more efficient and flexible system.
Running Post, Floor Supported
This system is ideal for applications where load-bearing capability of the header is a concern. The system's main weight is carried by the floor track. The upper-track is merely a guide. The lower-running carriages ride on top of the sill track and lie above the water run-off level.
Superior Thermal Break
The system is thermally broken with a wide polyamide plastic reinforced with glass fibers. This thermal barrier provides increased strength, superior humidity control, improved acoustics, and energy savings.
Hardware Options
For the main entry panel, several different locking options are available. Push-pull handles and kickplates are also available.
General Description
The SL73 is a thermally broken aluminum folding panel system designed to provide an opening glass wall or storefront up to 38 feet (11.5 m) or more wide (see Maximum Size Chart). It is available in various configurations utilizing one to twelve panels or more (see elevation drawings). The running post design provides extra stability. An option for swing entry/exit panel(s) is available. Units can be either inward or outward opening (see details in the section drawings).
Frame and Panels
The frame components, except for the saddle sill, are 3 1/8" (80 mm) wide extruded aluminum that is thermally broken with 3/4" (20 mm) wide polyamide plastic. The panels and running posts are 2 3/4" (70 mm) wide extruded aluminum that is thermally broken with a 15/16" (24 mm) wide polyamide plastic (see section drawings). In addition to the choices from the NanaWall Powder Coating Finish Chart, the full range of RAL high gloss and matte powder coatings are available. Anodized and flouropolymar kynar painted finishes are also available. See "Aluminum Finish Options" in the General Introduction. It is possible to have different finishes on the interior and exterior surfaces.
Panels and running posts are pre-assembled. All pins and screws to assemble frame are provided. Besides the higher weather performance (raised) sill, a thermally broken aluminum saddle sill (shown in section drawings) is available in a clear or dark bronze anodized finish.
Glazing
Units can be supplied glazed with either annealed or heat strengthened 7/16" (11 mm) single impact glass or 1 1/8" (28 mm) insulated impact glass. According to the Dade County approval and engineering analysis, heat strengthened glass needs to be used for larger sized panels and/or higher design windloads; see product approval details.
Weatherstripping
All weather stripping (consisting of EPDM or brush seals) is provided for sealing between panels and between panels and frames (see section drawings).
Sliding/Folding Hardware
For sliding and folding each pair of panels, a patented, floor-supported lower running carriage is attached to the running post profile. An upper running carriage is attached as a guide (see the section drawings). The four roller lower running carriage lies above the water run-off level and is constructed to ensure even distribution of pressure on all four rollers.
Rollers and Hinges
Rollers are stainless steel and have sealed bearings to ensure reduced sound running and resistance to extreme temperature. Three to five hinges per connection are provided to connect panels and running post profiles together and to connect panels to the frame. Finish of standard zinc die cast hinges would be closest powder coat match to panel profile. Available as an option are stainless steel hinges.
Locking Hardware and Handle Options
For each pair of folding panels (except for the pair to be opened first in a unit with no swing panel) provided is two-point locking hardware consisting of top and bottom Polyamide capped locking rods operated by a 180° turn of a handle on the inside only.
If there is a swing panel, there are the following hardware options on the main entry panel:
- Multi-point Locking: Consisting of lever handles on both sides, a lockset, lockable latch, deadbolt and rods at the top and the bottom. After turn of key or thumbturn, depression of handles withdraws latch, lifting of handles engages rods and turn of key or thumbturn engages deadbolt and locks. For a unit with a secondary swing panel, matching dummy lever handles on both sides and concealed flush bolts that operate the rods at the top and the bottom are available. Available with profile cylinder or with SFIC adapter.
- Deadbolt Lock and one point locking at the top and bottom: Consisting of push/pull handles on both sides with deadbolt(s) operated by a lockset. Turn of key or thumb turn operates lock. Available is a lockset option of having key operation on both sides. Also provided is one point locking, which consists of Polyamide capped locking rods operated by a 180° turn of a flat handle on the inside at the top and bottom. To keep the panel closed when locking points are disengaged, a door closer should be field installed, but note that a door closer can only be installed to a swing panel that is attached to the side jamb.
For a unit with no swing panel, on the folding pair to be opened first: Two point locking hardware consisting of top and bottom Polyamide capped locking rods operated by a 180° turn of handle on either inside or outside. Lockable with a lockset. Turn of key or thumb turn operates lock.
For a unit where locking/handles inside only is desired, like in window applications, on all swing panels or pair of folding panels to be opened first, provided is two point locking with a handle on the inside only.
Handle Finish Options:
- Standard: Stainless steel lever, standard and L-shaped handles in brushed satin or black titanium finishes.
- Optional: Lever handles in anti-viral/anti-microbial copper-nickel. Brass lever handles in oil rubbed, satin nickel, or white finish.
Push/pull handles are available in brushed stainless steel.
Testing Results
Higher Weather Performance (Raised) Sill
SL73
| Type of Test | Inward Opening Units (FL Product Approval #FL20107.1) | Outward Opening Units (FL Product Approval #FL20107.2) |
|---|---|---|
| Air Infiltration [? Air Infiltration] Protocol TAS 202 and ASTM E-283, cfm/ft² |
@ 1.57 psf (75 Pa): 0.08 to 0.30 A1 to A3 @ 6.24 psf (300 Pa): 0.20 to 0.30 |
@ 1.57 psf (75 Pa): 0.02 to 0.14 A1 to A3 @ 6.24 psf (300 Pa): 0.07 to 0.30 |
| Static Water Penetration [? Water Penetration] Protocol TAS 202 and ASTM E-547 and E331 |
No uncontrolled water entry @ 9 psf (440 Pa) | No uncontrolled water entry @ 9 psf (440 Pa) |
| Dynamic Water Penetration [? Water Penetration] AAMA 520 & ASTM E-2268 |
Performance Level 2: No water entry above allowable @ 6-18 psf (300-860 Pa) | Performance Level 1: No water entry above allowable @ 5-15 psf (250-715 Pa) |
| Structural Load Deflection [?️ Structural Load] TAS 202 & ASTM E-330: pass Note: structural test pressures were 50% higher than design pressures. |
DESIGN PRESSURE Positive @ 70 psf (3350 Pa) Negative @ 100 psf (4785 Pa) Class SP-PG70, Panel size - 3' x 8' (915 mm x 2438 mm) |
DESIGN PRESSURE Positive @ 70 psf (3350 Pa) Negative @ 70 psf (3350 Pa) Class SP-PG70, Panel size - 3' x 8' (915 mm x 2438 mm) |
| Missile Impact & Cycling [? Impact & Cycling] Protocols TAS 201 & 203 ASTM E1886 and E1996 |
DESIGN PRESSURE Positive @ 90 psf (4300 Pa) Negative @ 110 psf (5260 Pa) |
DESIGN PRESSURE Positive @ 90 psf (4300 Pa) Negative @ 90 psf (4300 Pa) |
| Forced Entry Resistance [? Forced Entry] |
In accordance with Protocol TAS 202, AAMA-1304 and ASTM F842 requirements +F1 | |
Notes:
- Excerpts of results of 3 separate units of various panels and configurations tested by Architectural Testing, Inc., Fresno, CA, an independent testing laboratory in October 2009.
- For Canada, tested to NAFS-08 or equivalent and CSA A44051-09 (with weep holes in sills by others to drain standing water in sill channels).
- Excerpts of results of 12' 11" W x 8' 3" H four panel units 1L3R tested by Architectural Testing, Inc., Fresno, CA, an independent testing laboratory in October 2009.
Low Profile Saddle Sill
SL73
| Type of Test | Inward Opening Units (FL Product Approval #FL20107.1) | Outward Opening Units (FL Product Approval #FL20107.2) |
|---|---|---|
| Air Infiltration [? Air Infiltration] Protocol TAS 202 and ASTM E-283, cfm/ft² |
@ 1.57 psf (75 Pa): 0.10 A3 @ 6.24 psf (300 Pa): 0.26 without sweeps @ 6.24 psf (300 Pa): 0.31 with sweeps |
@ 1.57 psf (75 Pa): 0.11 A3 @ 6.24 psf (300 Pa): 0.29 without sweeps @ 6.24 psf (300 Pa): 0.32 with sweeps |
| Water Penetration [? Water Penetration] ASTM E-547 and E331 Not Dade County water rated |
No uncontrolled water entry @ 5.25 psf (250 Pa) | No uncontrolled water entry @ 6.00 psf (300 Pa) |
| Structural Load Deflection [?️ Structural Load] TAS 202 & ASTM E-330: Pass |
DESIGN PRESSURE Positive @ 70 psf (3350 Pa) Negative @ 70 psf (3350 Pa) Class SP-PG70, Panel size - 3' x 8' (915 mm x 2438 mm) |
DESIGN PRESSURE Positive @ 70 psf (3350 Pa) Negative @ 70 psf (3350 Pa) Class SP-PG70, Panel size - 3' x 8' (915 mm x 2438 mm) |
| Missile Impact & Cycling [? Impact & Cycling] Protocols TAS 201 & 203 ASTM E 1886 and E 1996: Pass |
DESIGN PRESSURE Positive @ 90 psf (4300 Pa) Negative @ 90 psf (4300 Pa) |
DESIGN PRESSURE Positive @ 90 psf (4300 Pa) Negative @ 90 psf (4300 Pa) |
| Forced Entry Resistance [? Forced Entry] |
In accordance with TAS 202, AAMA-1304 and ASTM F842 requirements +F1 | |
Subject to the following adaptations of the sill in the field by others:
- Remove the gaskets covering the inner channel.
- Drill weep holes through the bottom of this channel (about one ½" diameter weep hole per panel.)
- Drill weep holes through the lower front face of the sill to drain water collected (about two 3½" diameter weep holes per panel through to the inside lower chamber.)
- Drill 3½" diameter weep holes (one per panel) through the middle channel.
Please note that due to varying site requirements and conditions, these sills will not be prepared for drainage by Nana Wall Systems, Inc. If this drainage system is desired, we recommend that a qualified professional construct this system on the project site strictly in accordance with NanaWall instructions with good waterproofing techniques. If drain connections are not made or are not possible, unit may leak with wind driven rain.
Notes:
- Excerpts of results of 3 separate units of various panels and configurations tested by Architectural Testing, Inc., Fresno, CA, an independent testing laboratory in October 2009.
- For Canada, tested to NAFS-08 or equivalent and CSA A44051-09.
Thermal Performance Data
[?️ Thermal Performance] Rated, certified and labeled in accordance with NFRC 100 and NFRC 200
| Type of Glass (1 Lite) | Center of Glass U-Factor | Inward Opening Units | Outward Opening Units | ||||
|---|---|---|---|---|---|---|---|
| Unit U-Factor | SHGC③ | VT① | Unit U-Factor | SHGC③ | VT① | ||
| Double IG Impact (air filled) | .45 | .49 | .48 | .51 | .50 | .48 | .51 |
| Double IG Impact Low E (argon filled) | .24 | .35 | .19 | .42 | .36 | .19 | .42 |
| Double IG Impact Low E #2 & #4 surfaces (argon filled) | .20 | .32 | .18 | .40 | .34 | .18 | .40 |
| Single Impact | .94 | .79 | .51 | .57 | .81 | .51 | .57 |
| Single Impact Low E (SB 70) | .94 | .79 | .25 | .39 | .81 | .24 | .39 |
NOTES:
③ SHGC = Solar Heat Gain Coefficient
① VT = Visible Transmittance
Shown above are thermal values for select glass options only. Thermal values for many other glass options are available. These may be able to meet specific requirements, such as Energy Star values for other zones, CA Title 24 prescriptive values, other state and local energy codes, etc. Thermal values for glass with other Low E coatings and Suituitive dynamic glass are available. Please contact NanaWall for more information.
Design Windload Charts
The following charts provide allowable design pressures for various configurations and sizes, based on comparative analysis where accepted in lieu of FL Product Approval.
Inward Opening Units with Higher Weather Performance (Raised) Sill
Allowable Design Pressures for other sizes can be extrapolated from the above values.
Outward Opening Units (Higher Weather Performance or Low Profile Saddle Sill) & Inward Opening Units (Low Profile Saddle Sill)
Allowable Design Pressures for other sizes can be extrapolated from the above values.
Negative Design Pressures for Inswing Units (Higher Weather Performance Sill)
Note: If project design pressures are calculated using Ultimate Design Wind Speed (ULT), multiply by 0.6 for equivalent ASD design pressures.
Positive Design Pressures for Inswing Units & Negative/Positive Design Pressures for Outswing Units
Note: If project design pressures are calculated using Ultimate Design Wind Speed (ULT), multiply by 0.6 for equivalent ASD design pressures.
Negative Design Pressures for Inswing Units & Positive Design Pressures for Outswing Units (Low Profile Saddle and Flush Sills)
Note: If project design pressures are calculated using Ultimate Design Wind Speed (ULT), multiply by 0.6 for equivalent ASD design pressures.
Size Charts
Maximum Size Chart
Relationship of Frame, Panel, and Glass Daylight Opening Sizes
Dimensions in millimeters unless noted. Calculation applies to the standard stiles and rails. Glass dimensions of all panels in a unit are equal.
Nominal Panel Height (PH) is defined as Glass Daylight Opening Height + 117 = Glass Opening Height + 4 5/8". Nominal Panel Width (PW) is defined as Glass Daylight Opening Width + 117 = Glass Opening Width + 4 5/8".
Panel Height is as seen from the inside on an inward opening unit and as seen from the outside on an outward opening unit. The Clear Opening Height will not be the same as the Panel Height due to overlap of the head jamb and sill.
Frame Width (FW) for each configuration is the sum of the nominal Panel Width (PW) x the number of panels plus side jamb dimensions and space between panels.
| Frame Height (FH) | SL73 System |
|---|---|
| Raised Sill | Frame Height = Panel Height + 74 (2 15/16") = Clear Opening Height + 120 (4 3/4") |
| Low Profile Saddle Sill | Frame Height = Panel Height + 84 (3 5/16") = Clear Opening Height + 100 (3 15/16") |
Frame Widths for Different Configurations with Majority of Panels Folding to Right (and their Mirror Image Configurations with Majority of Panels Folding to Left). These numbers are a guideline; contact NanaWall for exact calculations.
| Model | Frame Width Calculation |
|---|---|
| 1R | Frame Width = 1 x Panel Width + 129 = 1 x Panel Width + 5 1/2" |
| 1L1R | Frame Width = 2 x Panel Width + 162 = 2 x Panel Width + 6 3/4" |
| 2R | Frame Width = 2 x Panel Width + 180 = 2 x Panel Width + 7 1/2" |
| 3R | Frame Width = 3 x Panel Width + 210 = 3 x Panel Width + 8 5/8" |
| 1L2R | Frame Width = 3 x Panel Width + 212 = 3 x Panel Width + 8 3/4" |
| 4R | Frame Width = 4 x Panel Width + 260 = 4 x Panel Width + 10 5/8" |
| 1L3R | Frame Width = 4 x Panel Width + 242 = 4 x Panel Width + 9 15/16" |
| 2L2R | Frame Width = 4 x Panel Width + 290 = 4 x Panel Width + 11 13/16" |
| 5R | Frame Width = 5 x Panel Width + 290 = 5 x Panel Width + 11 13/16" |
| 1L4R, 2L3R | Frame Width = 5 x Panel Width + 292 = 5 x Panel Width + 11 15/16" |
| 3L3R, 1L5R | Frame Width = 6 x Panel Width + 322 = 6 x Panel Width + 13' |
| 2L4R | Frame Width = 6 x Panel Width + 370 = 6 x Panel Width + 14 15/16" |
| 6R | Frame Width = 6 x Panel Width + 340 = 6 x Panel Width + 13 3/4" |
| 3L4R, 2L5R, 1L6R | Frame Width = 7 x Panel Width + 373 = 7 x Panel Width + 15 1/16" |
| 4L4R, 2L6R | Frame Width = 8 x Panel Width + 450 = 8 x Panel Width + 18 1/8" |
| 3L5R | Frame Width = 8 x Panel Width + 402 = 8 x Panel Width + 16 1/4" |
| 4L5R, 3L6R | Frame Width = 9 x Panel Width + 453 = 9 x Panel Width + 18 3/16" |
| 5L5R | Frame Width = 10 x Panel Width +482 = 10 x Panel Width + 19 3/8" |
| 4L6R | Frame Width = 10 x Panel Width + 530 = 10 x Panel Width + 21 1/4" |
| 5L6R | Frame Width = 11 x Panel Width + 533 = 11 x Panel Width + 21 3/8" |
| 6L6R | Frame Width = 12 x Panel Width + 610 = 12 x Panel Width + 24 7/16" |
Section Details
The following diagrams illustrate cross-sections of various components for inward and outward opening systems.
Inward Opening Section Details
Outward Opening Section Details
Installation
The following sections provide suggested typical installation details. These drawings are general and may not be suitable for every specific installation. Product placement, fasteners, flashing, waterproofing, sealant, trim, and other details for specific surrounding conditions must be properly designed and provided by others. Units must be installed in conformance with FL Product Approval documents.
Inward Opening Suggested Typical Installation
Installation Considerations:
- The approximate weight of a panel with 7/16" (11 mm) impact glazing is 8 lbs/ft² (39 kg/m²), and with insulated impact glass is 11 lbs/ft² (54 kg/m²).
- The vertical structural deflection of the header should be the lesser of L/720 of the span and 1/4" (6 mm) under full loads.
- Although for Floor Supported systems, there is no vertical load on the header from the panels, structural support for lateral loads (both windload and when the panels are stacked open) must be provided. Refer to "Pre-Installation Preparation and Installation Guidelines" in the General Introduction. An owner's manual with installation instructions is available upon request.
- It is recommended that all building dead loads be applied to the header prior to installing the NanaWall. If so and if a reasonable amount of time has been allowed for the effect of this dead load on the header, then only the building's live load can be used to meet the above requirements of L/720 or 1/4" (6 mm). If not, both the dead and live loads need to be considered. Because the SL73 is Floor Supported, there is no vertical load on the header.
Outward Opening Suggested Typical Installation
Installation Considerations: (Same as Inward Opening)
Other Opening Suggested Typical Installation
- Recessed Higher Weather Performance Sill Installation (Inward Opening): Cross-section detail of a recessed sill for inward opening systems.
- Low Profile Saddle Sill* (Inward Opening): Cross-section detail of a low profile saddle sill for inward opening systems. Notes indicate it is not FL Product Approval rated for water and may require field modifications for drainage.
* FOR LOW PROFILE SADDLE SILL: For resistance against wind driven rain, the following is recommended by others:
- Remove the gasket covering the inner channel.
- Provide necessary weep holes at the bottom of the channels and on the outside face of the sill.
- Make necessary drain connections.
Contact NanaWall for a detailed drawing.
