Molded-in lid gasket. No fighting with O-rings. Assures a watertight seal every time. Tuf-Tite makes a full line of risers and accessories for pre-cast applications. Designed specifically to fit Tuf-Tite products.Available in 12, 16, 20 and 24 diameters. Comes in green. Includes stainless steel safety screws. Ideal for septic tanks. 12″ diameter domed lid.Number Of Pieces: 1. Shape: Domed. Item Weight: 1.2 Pounds. Item Dimensions LxWxH: 14 x 14 x 2 inches. Style: Compact. Brand: Tuf-Tite. Color: Green. Material: High Density Polyethylene. Date First Available: April 11, 2014. Best Sellers Rank: #73,239 in Health & Household. Customer Reviews: 4.7 out of 5 stars 303 ratings 4.7 out of 5 stars. : B00JMNHW8E. Batteries Required?: ?No. Batteries Included?: ?No. Included Components: ?1. Number Of Pieces: ?1. Item Package Quantity: ?1. Shape: ?Domed. Material: ?High Density Polyethylene. Style: ?Compact. Color: ?Green. Is Discontinued By Manufacturer: ?No. Item model number: ?12-RISL DOMED LID. Country of Origin: ?USA. Product Dimensions: ?14 x 14 x 2 inches. Item Weight: ?1.2 pounds. Part Number: ?1. Manufacturer: ?Tuf-Tite.