This lavatory support is engineered for through installation on block walls. Mounting this support requires that hex bolts pass through a pre-drilled heavy gauge steel plate from the side of the wall opposite to where the lavatory will be installed. The bolts continue through the support arms. Cap nuts then secure the arms to the bolts and the wall. The arms, coated for acid resistance will remain exposed under the lavatory upon installation. Leveling screws can be adjusted from underneath the arms to ensure a precise installation. Toggle bolts secure the lavatory to the arms. Both high back and flat slab lavatories can be supported.