Lindab AL Grilles - Global Version

Product Overview

The Lindab AL is a linear bar grille constructed from aluminum, featuring fixed blades. Its design offers high flexibility, making it suitable for a wide range of applications due to its various frame and grid combinations. The AL grille can be supplied with different mounting options, including a mounting frame, an opposed blade damper, and a plenum box accessory.

The AL grille is available in two versions:

• Global version: Wall opening dimensions are L + 5 mm x H + 5 mm.
• Nordic version: Wall opening dimensions are L x H.

Dimensions

The AL grille is available in several standard sizes with minimum and maximum dimensions:

• AL - 0, 1, 2, 3: Height (H) from 75 mm to 600 mm; Length (L) from 200 mm to 2000 mm.
• AL - 4, 5: Height (H) from 50 mm to 400 mm; Length (L) from 200 mm to 1500 mm.
• AL - 6: Height (H) from 100 mm to 300 mm; Length (L) from 200 mm to 1200 mm.

Standard grilles are manufactured in 50 mm increments within these ranges. Customized sizes are available upon request.

For lengths exceeding the maximum specified (e.g., L > 2000 mm), the AL grille can be delivered in multiple pieces to form a continuous linear grille line. Specific configurations for lengths over 2000 mm are detailed on page 5 of the original document.

Frame and Grid Options

The AL grille offers various frame and grid configurations:

Frame Types:

• 0 - No frame: Provides a basic grille without an integrated frame.
• 1 - 25 mm frame: A standard 25 mm frame.
• 2 - 25 mm frame with direction: A 25 mm frame with blades oriented in a specific direction.
• 3 - 20 mm flat frame: A slimmer 20 mm flat frame.
• 4 - 9 mm flat frame: A very flat 9 mm frame.
• 5 - 9 mm flat frame with direction: A 9 mm flat frame with blades oriented in a specific direction.
• 6 - Frame with no flange: A frame option without a flange.

Grid Types:

• 0 - Fixed grid 0°: Fixed blades at a 0-degree angle, compatible with all frames.
• 1 - Fixed grid 15°: Fixed blades at a 15-degree angle, compatible with all frames.
• 7 - Removable grid 0°: Removable blades at a 0-degree angle, compatible with frame type 6.
• 8 - Removable grid 15°: Removable blades at a 15-degree angle, compatible with frame type 6.

Installation Methods

Various installation methods are supported:

• Not prepared: Suitable for all frames.
• C - Clips: For frame types 1 and 2.
• CM - Clips + mounting frame: For frame types 1 and 2.
• V* - Visible screw holes: For frame types 1 and 2. (*Screws not included).
• VM* - Visible screw holes + mounting frame: For frame types 1 and 2. (*Screws not included).
• H** - Hidden screws: For frame types 1 and 2. (**Limitation: max. length 1200 mm, max. height 1000 mm).
• HM** - Hidden screws + mounting frame: For frame types 1 and 2. (**Limitation: max. length 1200 mm, max. height 1000 mm).
• B - Mounting bridge: For frame types 4 and 5.
• F - Fixing brackets: For frame types 4, 5, and 6.

Accessories

Optional accessories enhance the grille's functionality:

• Plenum box: Available models include PBA and VBX.
• Mounting frame: Model MFA.
• Opposed blade damper (DGA): A click-on damper is available for AL grilles with frame types 1, 2, 3 and installation types C, CM, V, VM. For grilles with installation types H, HM, or B, a shortened DGA damper option is available, which is factory-mounted and non-detachable.

Materials and Finish

The AL grille is constructed with high-quality materials:

• Grille frame and blades: Anodized aluminium.
• Mounting frame: Galvanized steel.
• Opposed blade damper: Galvanized steel.
• Grilles standard finish: Aluminium anodized, RAL 9003 (gloss 30). Other RAL colors are available upon request.

For grilles in colors other than the standard finish, please contact Lindab's sales department.

Technical Data and Performance

The document provides comprehensive technical data, including performance charts and selection tables for both supply air and extract air applications. Key parameters covered are:

• Airflow rate (qv): Measured in l/s and m³/h.
• Free area (Ak): Measured in m².
• Sound power level (LWA): Measured in dB(A).
• Total pressure loss (Dpt): Measured in Pa.
• Throw (l0.2): Throw to terminal velocity at 0.2 m/s, measured in meters.

Detailed selection tables provide performance data based on grille size, airflow rate, and other factors. These tables are extensive and are best utilized in conjunction with Lindab's advanced web tool, LindQST. LindQST allows for precise calculation of grille ranges, selection of suitable grille types and dimensions, product selection, room dimensioning, and documentation search.

Note on Sound Power Levels: The sound power levels provided are for grilles without an opposed blade damper. Corrections for damper settings are available in a separate table, indicating increases in sound power level and pressure loss when the damper is used.

Note on Air Jet Dispersal: Throw data is valid for installations more than 800 mm from the ceiling. For installations closer to the ceiling (less than 300 mm), the air throw is extended by 40%.

For detailed performance data and precise selection, users are encouraged to visit www.lindQST.com.

About Lindab

Lindab is dedicated to improving people's lives by contributing to an optimal indoor climate. This is achieved through the development of energy-efficient ventilation solutions and durable building products. Lindab also commits to a sustainable approach, working towards a better climate for both people and the environment.