Content Container This "3-in-1" damper provides volume control via an electric or pneumatic modulating actuator as well as fire and smoke control for "out of wall" applications. Models 1221-DOWM - 1 ½ Hour • Airfoil Blade • Modulating • Out of Wall 1221-OWM - 1 ½ Hour • Airfoil Blade • Modulating • Out of Wall, Grille Mount Submittals Individual Submittals 1221-DOWM • Fire/Smoke Damper • Out of Wall • Ducted, For Through Penetrations • Modulating 1221-OWM • Fire/Smoke Damper • Out of Wall • Grille Mount, Front Acuator Access • Modulating Options and Accessories MLS-300 • Position Indicator • Fire/Smoke and Smoke Damper • Belimo, Honeywell Actuators Quick-Set Retaining Angles for all Sleeved Fire and Combination Fire/Smoke Dampers Belimo ∙ FSAFB24 ∙ Actuator ∙ 24 Vac ∙ Modulating ∙ 180” lbs DCP1 • Damper Control Panel • Toggle Switch w/ Lights DCP2 • Damper Control Panel • Key Switch w/ Lights DCP3 • Damper Control Panel • Lights Only DCP4 • Damper Control Panel • Test Switch w/ Lights DCP5 • Damper Control Panel • Key Test Switch w/ Lights DSD-LF • System Sensor D4120 Duct Smoke Detector (DSD-LF) DTO (ML4) • Dual Temperature Override Sensor • Re-openable Sensor with Indicator ERL • Electric Resettable Link • For Combination Fire/Smoke Dampers Honeywell • MS4120F [412/HH1], MS4620F [462/HH3], MS8120F [812/HH2] 2-Position SPR Fire/Smoke Actuators, 175 in-lbs PRL • Pneumatic Replaceable Link • For Fire/Smoke Dampers Control Sequence Finish IOM 1210, 1220, 1260, 1270, 1280, 1290 Series • Operation & Maintenance Procedures 1221-DOW, 1221-DOWM • Fire/Smoke Damper • Out of Wall • Installation Instructions 1221-OW, 1221-OWM • Out of Wall Fire Damper, Grille Mount • Installation Instructions DTO Reopenable Control System w/High Limit for Comb. Fire/Smoke Dampers ERL • Electric Resettable Link • Installation Instructions Fire Resistant Cavity Shaft Wall Partitions • Fire & Fire/Smoke Dampers • Installation Instructions Flanged Type Alternate Breakaway Connections • Installation Instructions MLS-300 • For use w/ ML4X02/8X02, ML4115/8115, MS4X09/8X09 Electric Actuators • Installation Instructions PRL • Pneumatic Replaceable Link • Fire/Smoke Dampers • Installation & Operation Instructions QS1, QS2 • 'Quick - Set' Retaining Angles • Fire & Fire/Smoke Dampers Sleeve Trimming Instructions Steel & Wood Stud Framing in Drywall Partitions • Fire & Fire/Smoke Dampers • Installation Instructions TDC/TDF Proprietary Flange System Breakaway Connections • Installation Instructions Specifications Performance Data 1221-DOW • Fire/Smoke Damper • Pressure Drop & Leakage Class 1221-OW • Fire/Smoke Damper • Pressure Drop & Leakage Class Catalog Literature Combination Fire/Smoke Dampers