Specification - P6060 - Heavy Duty 6in Wide Stainless Steel Trench Drain MIFAB series P6060 - 6in wide heavy duty trench drain constructed of 14 gauge, Type 304 stainless steel complete with anchor tabs and radiused bottom body and 7 guage (3/16in) Type 304 stainless steel grates. Free area of 46.56 square inches per 3 ft. section. Standard with ANSI rated "Heavy Duty" slotted Type 304 stainless steel grates with a load rating of 5,000 to 7,500 lbs.