Best Seller | Broan Nutone Ceiling Radiation/Fire Damper for 100 150 200 250 & 300 CFM Ceiling Mount Models 12.5 In.H-W Manual Ceiling Radiation Damper Damper Application Ceiling Radiation Frame Material Steel Overall Height 3 5/8 in Rough Opening Shape Square For Duct Shape Square Overall Width 12 1/2 in more | | $92.72 $85.32 FREE shipping go to store |