AT1 Fire and Smoke Damper

Model:	AT1
Depth:	5½”
Orientation:	Vertical or Horizontal
Frame Material:	16 ga. Galvanized Steel
Frame Type:	Hat Channel; Flat Head and Sill for Sizes thru 13″ High
Sleeve:	20 ga. Galvanized Steel by 18″ Long Sizes Greater than 84″ Require 18 ga.
Blade Material:	16 ga.Galvanized Steel Single Thickness
Blade Action:	Parallel
Blade Seals:	Silicone
Jamb Seals:	Stainless Steel
Bearings:	Oil Impregnated Bronze
Axles:	Plated Solid Steel Stub
Linkage:	Plated Steel Angle and Crank Plates with Staineless Steel Pivots In-Jamb or On-Blade
Stops:	18 ga. Galvanized at Head and Sill
Actuator:	Electric 120V, 24V or 230V with Heat Response Device (EHRD) Pneumatic with Heat Response Device (PHRD) Factory installed for Power-Open/Spring-Close (Fail Close) Operation External Left Hand Mount Standard Rigth Hand and/or Internal Mount Options
Finish:	Mill
Max Differential Pressure:	4 in. w.g.
Max Velocity:	2000fpm or 3000fpm
Leakage Rating:	4 cfm per ft² Max at 1 in. w.g. 8 cfm per ft² Max at 4 in. w.g.

*Dampers smaller than minimum frame size require transitions.

Description

Transitions:	No Sleeves, Round or Oval Short Width (<8″) and/or Short Height (<6″)
Sleeves:	Various Gauges and Depths 18″ to 24″ Standard
Retaining Angles:	Tab Lock 1 or 2 Sets
Dual Position Indication Switches (DPI)
Smoke Detectors:	SM-501 Flow Rated or 2151 No-Flow (12″ Minimum)
Sensotherm Re-Openable Heat Response Devices:	Electric (ESOT) or Pneumatic (PSOT)
Axles and Bearings:	Stainless Steel
Remote Test Boxes:	Option for Momentary Test Switch
Copper Tubing:	for Pnuematic Actuators
Transformers
Security Bars