Zero Thresholds: Comprehensive Catalog of Door Sealing Systems
Introduction
Zero thresholds are engineered with high-quality materials and construction to withstand demanding heavy traffic and extreme temperature differentials. The robust, heavy-gauge material allows for direct installation into concrete without common issues like buckling or loose screws. A diverse range of threshold types is available to meet specific application needs, including energy-efficient thermal-break thresholds, adjustable-width systems, and double-sealing extruded bulb/finger (EBF) systems. These solutions are vital for commercial and institutional facilities, supporting fire-rated doors, ADA openings, and sound-rated assemblies. Thresholds play a crucial role in enhancing building energy efficiency by controlling airflow and providing barriers against smoke, sound, and light, making high-quality, robustly designed materials from the Zero brand essential.
Product Categories
- Saddle Thresholds
- Half-Saddle Thresholds
- Offset Thresholds
- Rabbeted Thresholds
- Thermal Break Thresholds
- Carpet Divider Thresholds
- Adjustable Thresholds
- Ramps
- Interlocking Thresholds
- Specialized Threshold Solutions (e.g., Bulkhead, Roof Curb, Wheelchair Accessible Shower, Diamond-Plate, Cover Plates)
Key Features & Options
Finishes:
- Aluminum Mill Finish (A)
- Aluminum Black Anodized (BK)
- Aluminum Dark Bronze Anodized (D)
- Aluminum Gold Anodized (G)
- Bronze, Architectural Mill Finish (B)
- Oil-Rubbed Bronze (B-ORB)
- Satin Polished Bronze (B-SAT)
- High Buff Polished Bronze (B-POL)
Options:
- Epoxy abrasive tread (E)
- Photoluminescent and abrasive epoxy tread (EL)
- Full body strength fill (V3)
- Epoxy and full body strength fill (EV3)
- Photoluminescent and abrasive epoxy tread, full body strength fill (ELV3)
- No holes (NH)
- Weep hole (WH)
- Beveled edges (BV)
Materials & Standards
Base Materials:
- Aluminum (6063 alloy)
- Bronze (Brass alloy 380)
- Spring Bronze
- Zinc
- Neoprene (closed-cell sponge and solid)
- Silicone
- EPDM rubber
- Polypropylene brush
Product Symbols & Classification Standards:
- FIRE RATED-UL10C
- FIRE RATED-UL10B
- FIRE RATED-CAN
- SMOKE AND DRAFT CONTROL
- AIR INFILTRATION (ASTM E-283)
- SOUND (Acoustical rating)
- ADA ACCESSIBLE (ICC/ANSI A117.1)
Featured Product Lines
The catalog details numerous models within each category, providing specific dimensions, ANSI/BHMA codes, and application notes. For example, Saddle Thresholds include models like 63, 544, 545, 546, 654, and 164, each with distinct profiles and dimensions. Half-saddle thresholds feature models such as 1545, 1673, 627, and 523, often incorporating EBF seals for enhanced performance. Adjustable thresholds, like the 100 series and 670 series, offer versatility in installation and application. Specialized solutions include wheelchair-accessible shower thresholds (e.g., 8452) and cover plate assemblies for automatic door closers.
For detailed specifications, diagrams, and ordering information for each model, please refer to the full Zero International catalog.
