MIFAB® Series BIG-1150 HDPE rotational molded grease interceptor with flow rating of 100 gpm and liquid holding capacity of 300 gal. Steel encased composite lid provides a water/gas tight seal and has a minimum of 20000 lb load capacity. Unit shall include: 3/8 in uniform wall thickness, deep seal trap covered by lid, internal air relief by-pass, adjustable lid system, stainless steel calibrated orifice plate (internal flow control), sample port access and 4 in no hub inlet and outlet connections. Steel encased composite lid provides a water / gas tight seal and has a minimum of 20000 lb load capacity. The lid is designed in accordance with the loading requirements of AASHTO H20. Interceptor shall be tested and certified to the PDI Standard PDI-G101, CSA B481, ASME A112.14.3 and listed with IAPMO. Big Max® grease interceptors are also in compliance with International Plumbing Code (IPC)/ICC by IAPMO.