Content Container Nailor 0716-4 is ideal for installation in tight places that require a fire and heat barrier in air duct openings penetrating fire resistive membrane ceilings. Adjustable model 0716-4A for volume control available. Model 0720 ceiling radiation damper, which functions as a fire and heat barrier in air duct openings that penetrate fire resistive membrane ceilings, is for use in lieu of hinged door type dampers in any UL floor/ceiling assembly with up to a 3 hour fire resistance rating where air ducts are permitted. Models 0716-4 - Square or Rectangular • Dual Butterfly 0720 - Square or Rectangular • Curtain Style 0716-4A - Square or Rectangular • Dual Butterfly, Adjustable Submittals All Submittals Combined Individual Submittals 0716-4 • Ceiling Radiation Damper • Square or Rectangular • Low Profile • Dual Butterfly 0716-4A • Ceiling Radiation Damper • Square or Rectangular • Low Profile • Dual Butterfly, Adjustable 0720 • Ceiling Radiation Damper • Square or Rectangular • Curtain Type IOM 0700 • Ceiling Radiation Damper w/ Thermal Blanket • Lay-in Diffuser Applications • Installation Instructions 0700 • Ceiling Radiation Damper • Inspection & Maintenance Procedures 0700 • Ceiling Radiation Dampers • Steel Duct Support Applications • Installation Instructions Specifications Model 0720 • Low Profile Ceiling Dampers Models 0716, 0716-4, 0722, 0722-SE And 0722-LE • Ceiling Dampers Models 0716A, 0716-4A, 0722A, 0722A-SE AND 0722A-LE • Ceiling Dampers • Adjustable Catalog Revit Dampers • G • Ceiling Dampers (CD)