Thermaco Trapzilla99 Model No. TZ-1826-ECA, linear low-density rotationally molded polyethylene grease and oil separator(s) for below or above-ground installation, shall be PDI-G 101 and ASME A112.14.3-rated at 100 GPM (6.31 l/s), 1826 pounds (828 Kg) of grease storage capacity with a flat grease separation efficiency curve, crush-resistant cylindrical walls, two fully removable covers for grease and solids removal, integral non- floatation anchor ring for in-ground installation, integral horizontal baffle, laminar inlet flow diverter, integral vessel vent, separate storage compartments for grease and solids, and including as an integral part of the unit an integral gas trap and a fully removable polyethylene self-positioning keyed cover equipped with sealed thread fasteners. Includes dual-entry extension collar assembly, linear low-density rotationally molded polyethylene for field adjust- ability to optimal installation depth.