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 is EPA and OSHA approved and can be further recycled when changed out by spreading on flower beds, roads, gardens, etc.
Unwanted rainwater adds to the cost of sewage treatment. Eliminate unwanted rainwater & produce revenue for your city by reducing sewer treatment costs. Rainstopper Manhole Cover Inserts are built to prevent unwanted rainwater, snowmelt, sand, dirt, and trash from entering your system through the manhole cover.
