Light Industrial Single Thickness Control Damper

Model:	303
Minimum Panel Size:	6″ x 6″ (Parallel Blade) 6″ x 12″ (Opposed Blade)
Maximum Panel Size:	48″ x 72″ without Seals 36″ x 72″ with Seals
Frame Depth:	8″ Deep
Frame Type:	Formed Channel
Frame Material:	14 ga.or 12 ga. Galvanized Steel
Blade Material:	16 ga. Galvanized Steel; 8″ Max Width
Blade Action:	Parallel or Opposed
Shaft:	½” Square Stub Plated Steel
Bearings:	Oil Impregnated Bronze
Linkage:	Heavy Duty Plated Steel Arms with Stainless Pivots In-Jamb
Operator:	4″ Extended Shaft
Finish:	Mill
Maximum Temperature:	250°F

*Dampers smaller than minimum frame size require transitions.

Description

FRAME: 2” x 8” x 2” – 14 GA. galvanized steel, formed channel.
BLADE: 16 GA. formed galvanized steel, approximately 6” on centers.
SHAFT: ½” dia. plated, cold-finished steel stub. Plug welded to blade. Drive shaft to be continuous length.
BEARINGS: Stainless steel flanged sleeve, press fit into frame.
LINKAGE: Plated steel arm located in jamb. ⁵⁄16” dia. inter-connecting rod with stainless steel trunnion pivot fastener.
OPERATOR: 6” extended shaft.
FINISH: Mill.
TEMP. LIMIT: 250°F. Consult the factory for temperatures above 250°F.