MIFAB® F1100-C-ZS Series lacquered cast iron floor drain with anchor flange and 1/8” (3) recessed, 13 1/4” (337) square elastomeric flange, cast iron membrane clamp ring with primary and secondary weepholes for waterproofing membrane, and standard reinforced 6” x 6” (152 x 152) square strainer. (For non-membrane floors, use MIFAB F1100-ZS Series.)