Easy installation, with no alteration to existing outlets
Prevents the passage of odors, drain flies and other insects
One piece, with no braces to catch debris or obstruct water flow
Permanent, maintenance-free solution
Made from a flexible, antimicrobial polymer, Grate Seal is a permanent & maintenance free, one-way valve that is easily retro-fitted into drains & floor wastes to stop sewer smells and hazardous odors, disease carrying airborne mold and bacteria, vermin and cockroaches, sewer back-wash, suds and even noise coming from drains into habitable areas. From Homes to Hospitals to High-rises, Grate Seal is 100% effective.