The Zurn Z520 9" area drain has a Dura-Coated cast iron body with bottom outlet, seepage pan, and adjustable extension frame with heavy-duty cast iron deep flange slotted grate.
There are four 3/16" diameter weep holes evenly spaced around the top of the anchor flange.
No, in order to be heel-proof, the grate must have openings that are 5/16" or smaller in width. The Z520 grate has 7/16" wide slots. When a heel-proof grate is required for the Z520, specify the -HP (heel-proof grate) suffix option.