Thermaco Trapzilla Model No. TZ-600-6 with 6" Inlet/Outlet, rotationally molded polyethylene grease interceptor(s) for above or below ground installation, shall be rated at 75 GPM (4.73 l/s) with 86.6 gal. (327.8 l) / 635.6 lbs. (288.3 Kg) of total grease storage capacity with flat separation efficiency curve capable of holding 91% of volume in free-floating fats, oils, and grease at capacity, with removable cover for grease and solids removal access, integral anti-flotation anchor ring for in-ground installation, integral horizontal baffle, laminar inlet flow diverter, integral vessel vent, separate storage compartments for grease and heavier than water solids, a unitary tank body and 6” (152 mm) inlet/outlet structures without gasket interfaces, utilizing an interior radial compression ring conjoining invert to tank outlet/inlet structures without bulkhead fittings and/or gaskets, invert top and bottom secured attachment points, sloping conical bottom for solids retention, integral sewer gas trap, and a fully removable polyethylene self-positioning cover with sealed thread fasteners.