| Backdraft damper, horizontal mount, Model WD-100, 30 In Sq, No Flange | $187.00 | | |
| Backdraft damper, vertical mount, Model BD-320, 10 In Sq, Flange on Discharge, Performance up to 1,500 ft/min | $127.00 | | |
| Backdraft damper, vertical mount, Model BD-320, 12 In Sq, Flange on Discharge, Performance up to 1,500 ft/min | $136.00 | | |
| Backdraft damper, vertical mount, Model BD-320, 14 In Sq, Flange on Discharge, Performance up to 1,500 ft/min | $148.00 | | |
| Backdraft damper, vertical mount, Model BD-320, 16 In Sq, Flange on Discharge, Performance up to 1,500 ft/min | $170.00 | | |
| Backdraft damper, vertical mount, Model BD-320, 18 In Sq, Flange on Discharge, Performance up to 1,500 ft/min | $179.00 | | |