Our OdorKnocker™ unit is made of 18 Gauge 304 Stainless Steel which is hydraulically pressed to shape from a single sheet of SS. We do not weld as welds may be weakened by the action of H2S.
Our media is non -hazardous and made from recycled material by combining hydrated ground iron and wood chips. It can be further recycled when changed out by spreading on flower beds, roads, gardens, etc.
Rainstopper Manhole Cover Inserts are built to prevent unwanted rainwater, snowmelt, sand, dirt, and trash from entering your system through the manhole cover.