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

The OdorHog Metal Cap is a louvered, galvanized steel cap that offers excellent venting capability. It is the top choice for aesthetics on the roofline and many times, matches or compliments other ducting and venting that is existing on the roof. 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 locations that have potential for subzero temperatures. The slip-on models need no tools or glue to install – they slip over 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 that is 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, seat the new bag, and put the cap back on. Fresh charcoal in minutes! OdorHog filters are designed for passive or ambient air flow and are not suitable for applications where blowers or fans push or force air.