Schier Great Basin™ Short Riser Extension System, For Use With: Great Basin™ Model GB-15, GB-20 and GB-25 Grease Interceptor, Molded Polyethylene, 18-5/8 in Dia x 17-1/4 in L, Domestic
TeleGlide field adjustable riser system to consist of rotationally molded polyethylene body, EPDM gasket and powder coated steel ring. Risers shall allow onsite adjustability of cover to grade.