Sea-Dog Stainless Steel Butterfly Vent - Center Knob - 4" [331440-1] Brand_Innovative Lighting or use one top loading

or use one top loading end cap and close the opposite end with the included flush end cap

Net Weight: 4

Dipstick tube

Carbon monoxide detectors

Sea-Dog Stainless Steel Butterfly Vent - Center Knob - 4" [331440-1] Brand_Innovative Lighting or use one top loadingStainless Steel Butterfly Vent Center Knob 4" Butterfly Vents promote air flow preventing mold, mildew, and associated odors. Features a center knob that allows for easy adjustment of the opening. Corrosion resistant 304 stainless steel construction. Installs with four #6 RH fasteners (not included). WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm.