The Zurn Z662 16" square heavy-duty drain comes with a Dura-Coated cast iron body with bottom outlet, seepage pan, combination membrane flashing clamp and frame for heavy-duty slotted loose grate, with suspended sediment bucket.
No, the standard Z662 is not heel-proof, as the slot openings are 9/16" wide. However, Zurn offers a -HP, heel-proof grate suffix option, for the Z662 which has 1/4" wide slots. Click the following link for a specification sheet on this product:Z662
ADA standards specify that for a drain to be ADA compliant, the drain must have a slot width of no greater than 1/2" and have the drain installed so that the slots run perpendicular to the primary flow of traffic. To comply with this, the Z662 must be specified with the -HP, heel-proof grate suffix option and be installed so that the slots are perpendicular to the flow of traffic.