COMBINATION OF FIRE - SMOKE DAMPERS
COMBINATION OF FIRE - SMOKE DAMPERS

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COMBINATION OF FIRE - SMOKE DAMPERS
COMBINATION OF FIRE - SMOKE DAMPERS

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COMBINATION OF FIRE - SMOKE DAMPERS
COMBINATION OF FIRE - SMOKE DAMPERS

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MA1
Combination Fire / Smoke Damper
Class I • 250°F or 350°F • 1½ Hour • Galvanized Steel • Airfoil Blade

STANDARD CONSTRUCTION

Frame

Frame Type

Blade 

Blade Type

Axle materials

Axle Bearings

Linkage

Blade Seal

Jamb Seal

Closure Device

Closure Temp.

: 16-GA galvanized steel

: 5½" X ⅞" Galvanized steel Hat Channel

: 20-GA Double skin ( equivalent to 14-GA )

: Airfoil type

: Plated Solid Steel stub

: Oil impregnated bronze

: Plated steel angle & crank plates with stainless steel
pivots; In-jamb type

: Silicone

: Stainless steel

: Electric heat responsive device

: 165º F (73ºC)

DATA SHEETS

  • Installation Instruction

  • Supplementry Information

OPTIONS

  • Exact Size (no undercut)

  • Actuators - 230V, 24V, 120V or Pneumatic

  • Right Hand and/or Internal Actuator Mounting Locations (Restrictions Apply)

  • Dual Position Indication (DPI) Switches

  • Sensotherm Re-Openable Heat Response Device (ESOT) for Electric Actuator

  • Sensotherm Re-Openable Heat Response Device (PSOT) for Pneumatic Actuator

  • Model SM-501 Flow-Rated Smoke Detector

  • Model 2151 No-Flow Smoke Detector (12” Minimum Damper Height)

  • Momentary Test Switch

  • Remote Test Box

  • Transformers 

  • Tab-Lock Retaining Angles

  • Stainless Steel Bearings

  • Stainless Steel Axles

  • Security Bars

  • Copper Tubing (for Pneumatic Actuators)

  • Sleeves of Various Depths and Gauge Thicknesses (restriction apply)

  • No Sleeves (restriction apply)

  • Round or Oval Transitions

  • Short-Width (<8”) and/or Short-Height (<6”) Transitions

NOTES

  • Damper frames are provided approximately ¼ undersized. The addition of a sleeve will increase the size of the assembly.

  • Damper with smoke detector must have a minimum sleeve of 19” (10.5” on the actuator side and 3” on the non-actuator side). 

  • Dampers for horizontal installation can only be mounted in a fire barrier constructed of masonry/concrete materials.