Perfect for exterior and interior uses.

•  Applications
  • The ideal choice when preventing rain, snow and wind ingress is a priority  in outdoor exhaust usage
  • Use in your residential, commercial or industrial spaces to ventilate ducting, crawlspaces, utility rooms and more for air exhaust or intake / return
  • For installation in walls, ceilings, or doors of any construction - eg brick, cement, metal, wood, etc
• Weather Proof - Extra deep and steeply angled louvers for the highest protection from rain, snow and wind ingress
• Pest Proof - Bird mesh screen made of galvanized steel keeps pet and insects out
• Finished with powder coating. Many colors available
  • Standard - Silver
  • White, Brown and Flat Black also available along with any custom color 
• Noise free - Made of rigid aluminum frame and louvers to minimize vibration

Features

• Heavy-duty, extruded aluminum flange frame.
  
• Fixed, non-drainable blades on 2" spacing.
  
• J-blade design minimizes water ingress while maximizing free area.
• Nominal 43% free area, based on 48" x 48" louver
• Mullions used for sizes over 36" in length
• Available on 1" standard dimensions
  
• Custom sizes manufactured up to 1/16" increments 
• Bird screen included standard. Insect screen can be specified
• Available with AAMA 2605 powder coat paint for high-performance exterior finishes

Sizing 

Neck depth: 2 inches

See schematic (in images) or Specification Sheet for complete sizing information.

Sizes listed are defined as "Neck Size". This is the opening size / ventilating area once the grille is installed. It is also the size of cutout required in the wall / ceiling / door to install the grille.

Installation

1. The Half Mullion multi piece construction is very easy to assemble in the field. It is a simple male / female type connection, top and bottom of one side of the louver that fits into the other, that you use to join the pieces together with aligning pins provided by Byson until you get it into place and secure it to your surface.
2. Self tapping screws (not included) can be used to drill directly into the grille face frame or neck, depending on preference, and fix it to the surface (wall or wooden frame) as required.  

Shipping

• Due to large size, 48x48 inches and 60x60 inches sizes require shipping to be quoted

Downloads

• Specification Sheet
• Multi-Piece Construction Assembly