From Mounting Rings to Leach line pipe we carry several items for your convenience. Want to add riser rings to an existing tank to make future access easier, try our mounting ring with sealant. Choose from 6” high to 12” high riser rings, top them off with flat lids or dome lids. Installing a tank in a high-traffic area, Briggs’ offers a Traffic Top, reinforced lid for our tanks. See Septic Tanks for more details.