Gaskets used with Horn/Strobe Damage Stopper cover to make weather resistant. Includes two weather gaskets (one for between wall and conduit spacer and one for between spacer and cover) and one conduit gasket. Can be used with: STI-1210D & STI-1210ESTI-1221D & STI-1221ESTI-7500D & STI-7500ESTI-7501D & STI-7501ESTI-7510D & STI-7510ESTI-7511D & STI-7511E