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: 2-7/8″ Hat channel (11/16 x 5/8 x 1-1/2 x 5/8 x 11/16)
Blades: Formed .025 3003 aluminum (3-1/2″ +/-)
Bushings: 1/4″ bronze oilite Rod: 1/4″ round CRS plated
Seals: 1/16″ x 1/2″ felt strips on blades
Linkage: .032 3003 aluminum brackets/.063 linkage
Maximum Velocity: 1000 FPM
Maximum Size: 36″x36″ – Larger sizes must be sectioned
Options:
Flange – (on in-take side or out-put side)
Counter balance
Spring load
