Standard Construction:
List dampers duct size (WxH) width x height – all dampers will be 1/4″ smaller both ways
Frame: 16ga galvanized-hat channel-welded construction
Frame dimensions: 3-7/8″ Hat channel (11/16 x 5/8 x 2-1/2 x 5/8 x 11/x16)
Blades: Formed .063 3003 aluminum
Bushings: 1/2″ round bronze oilite
Axles: 1/2″ x 2-1/2″ CRS plated pins
Hardware: Plated steel-brass pivits-1/4″ rd plated linkage rods
Seals: 1/16″ x 1/2″ felt strips on blades
Maximum velocity: 3000 FPM
Maximum size: 36″x36″ – Larger sizes must be sectioned
Options:
Flange – (on in-take side or out-put side)
