MT1
Combination Fire / Smoke Damper
Class I • 3 Hour • 250°F or 350°F • Galvanized Steel • Single Thickness Blade • UL Classified Damper
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
: 16 -GA Double skin ( equivalent to 14-GA )
: Single Thickness Blade
: Plated Solid Steel stub
: Oil impregnated bronze
: Plated steel angle & crank plates with stainless steel
pivots; In-jamb type or on-blade type
: Silicone
: Stainless steel
: Electric heat responsive device
: 165º F (73ºC)
OPTIONS
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Exact Size (no undercut)
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Actuators - 120V, 24V, 230V or Pneumatic
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Right Hand and/or Internal Actuator Mounting Locations (Restrictions Apply)
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Dual Position Indication (DPI) Switches
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Sensotherm Re-Openable Heat Response Device (ESOT) for Electric Actuator
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Sensotherm Re-Openable Heat Response Device (PSOT) for Pneumatic Actuator
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Model SM-501 Flow-Rated Smoke Detector
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Model 2151 No-Flow Smoke Detector (12” Minimum Damper Height)
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Momentary Test Switch
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Remote Test Boxes
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Copper Tubing (for Pneumatic Actuators)
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Transformers
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Tab-Lock Retaining Angles - 1 or 2 Sets
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Stainless Steel Bearings
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Stainless Steel Axles
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Security Bars
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Sleeves of Various Depths and Gauge Thickness (restriction apply)
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No Sleeves (restriction apply)
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Round or Oval Transitions
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Short-Width (<8”) and/or Short-Height (<6”) Transitions
DATA SHEETS
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Installation Instruction
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Supplementry Information
NOTES
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“A” width and “B” height are opening dimensions. Dampers are provided approximately ¼” undersize.
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Damper >= 12” in height with factory mounted SM-501 smoke detectors require a minimum 19” deep sleeve (10.5” on the actuator side); detectors will be mounted on the side of the damper opposite actuator.
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Damper < 12” in height with factory mounted SM-501 smoke detectors require a minimum 20 deep sleeve (11.5” on the actuator side); detectors will be mounted on the bottom or top of damper.
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Smoke Detectors can be ordered for field mounting with standard 18” deep sleeve.
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Dampers for horizontal installation can only be mounted in a fire barrier constructed of masonry/concrete materials.