The built in damper prevents back drafts while the removable guard prevents critters from entering the home through the vent
96 in Working Load Limit 2000 lb Weight Each (lbs
Rated 125 PSI water
Hassle-free
LED automatic fiber optic whale night light
LED Vintage Light Bulb, G40, Warm White, Amber Bulb, 250 Lumens, 5-Watt Conair The built in damper preventsGe, led5dg40mvs v ot, 5w, warm white light color, amber bulb color, g40 shape, vintage, led vintage bulb, equivalent to a 60w incandescent, medium base, spiral filament, dimmable, 250 lumens, 2,000 kelvin color temperature, cri=80, 13. 7 year, 15,000 hours rated life, mol=4. 50", all glass, california title 20.