Specification - FS1770-FL - 16" x 16" x 11" Deep Floor Area and Indirect Sanitary Waste Drain With Flange. MIFAB series FS1770-FL - 16" x 16" x 11" deep floor area and indirect sanitary waste drain complete with white acid resistant coated steel interior and heavy duty ductile iron loose set grate with white acid resistant coating and anchor flange. Anti-splash aluminum dome strainer included.