STANDARD CONSTRUCTION
• FRAME
Extruded aluminum construction 0.087” (2.2mm) Thick, 21/4" Depth.
• BLADES
Extruded aluminum construction 0.079” (2mm) Thick.
• COUNTER BALANCE
Zinc plated bar on the blade (Except the top blade) adjustable for final “ON THE JOB” setting.
• SEALS
Vinyl blade cushion seals mechanicaly locked into the blade.
• BEARINGS & AXLES
Corrosion resistant heavy duty Die Cast Aluminum Axles
with Bronze Bearings.
• LINKAGE
0.118” (3mm) Aluminum tie bars in the air stream.
• FINISH
Mill.
• TEMPERATURE LIMITS
- 40°F (-40°C) Minimum & 250°F (121°C) Maximum.
• MOUNTING
Vertical & Horizontal.
OPTIONS:
1) FLANGED: 30mm Extruded Aluminum Flange.
2) SEALS: Neopren Rubber Foam
3) SLEEVES: All types of sleeve for duct mounting
CONSTRUCTION SIZES
MINIMUM SINGLE SECTION:
6" (152mm) W x 12"(305mm) H
MAXIMUM SINGLE SECTION:
Vertical Mount: 48"(1219mm) W x 50"(1270mm) H
Horizontal Mount: 36"(914mm) W x 36"(914mm) H
MAXIMUM MULTIPLE SECTION:
Unlimited
NOTE:
When used in fan discharge application damper should be located at least 1/2 fan diameter from fan discharge.