Sea-Dog Stainless Steel Butterfly Vent - Center Knob - 4" [331440-1] Automotive/RV | Fume Detectors Replaceable magnesium anode to protect

Replaceable magnesium anode to protect tank and neutralize acids in the water

Vertical/Horizontal: Horizontal

Instant On/Off - No Warm Up

KeelGuard® - 10' - Hunter Green

sealed keypad

Sea-Dog Stainless Steel Butterfly Vent - Center Knob - 4" [331440-1] Automotive/RV | Fume Detectors Replaceable magnesium anode to protectStainless 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.