Hedstrom Plastics septic tank covers are designed to eliminate riser systems. They are available in 18- and 24-inch lids made from strong polyethylene UV-protected material, yet lightweight for easy installation and transportation. Lids can be sand filled or foam filled for additional strength. A gasket and safety screws come standard, along with optional custom nameplates displaying a service provider’s company name and contact information. 888/434-5891; www.hedstromplastics.com.