Risers provice access to septic tank openings. Constructed of ribbed PVC pipe, they are available in the following nominal diameters: 12, 18, 21, 24, and 30 in. (305, 457, 533, 610, and 762 mm). Lighter-duty lids available in 8-, 12-, and 15-in. nominal diameters (203, 305, 381 mm). Custom imprinting available on 24-in. and 30-in. lids (610 and 762 mm).

• Risers come in various diameters and can be cast into a concrete tank, or bolted down with adapters.
• Adapter rings can also be cast right into a concrete tank.
• Risers and adapters can be easily bonded to fiberglass tanks with a structural adhesive.
• Grade rings allow installers to stack extensions onto risers in the field.
• Accessories such as adhesive, pipe grommets, cord grips, splice boxes, pipe cutting and drilling tools, insulation, vents, and fiberglass brackets are available.