OdorHog Metal Cap Slip On Vent Stack Pipe Filter 4" ABS Removes Outdoor Septic Odor

The OdorHog Metal Cap is a louvered, galvanized steel cap which offers excellent venting capability. It is the top choice for aesthetics on the roofline and many times, matches or compliments existing ducting/venting. Like all of our OdorHog septic odor filters, the OdorHog Metal Cap filter is available in White PVC or Black ABS. We recommend the ABS models for Northern US and Other Locations where sub-zero temps are likely. OdorHog's slip-on models need no tools or glue to install – they slip right onto the vent pipe on the roof. If you have metal or cast iron pipes choose a clamp-on model. A flathead screwdriver or a 5/16" nut driver is all you'll need to install this unit. Each OdorHog has a replaceable mesh bag inside the body, with pelletized charcoal activated for the H2S molecule. Changing your charcoal out has never been easier and can be done while the OdorHog remains on the vent pipe! Just remove the cap, pull the old charcoal bag out by the handle and put the new bag in and put the cap back on. Fresh charcoal in minutes! Our commercial grade charcoal is made from a coconut shell based carbon that has a higher sewer gas absorption capacity and is made for longer life. It is perfect for heavy hydrogen sulfide applications. OdorHogs are designed for passive or ambient air flow and are not suitable for applications where blowers or fans push or force air.