20" Concealed Heavy Duty Brackets. Fits Hollow Slabs, Solid Beams & Aproned Surfaces up to 24" Deep & any Length. Supports mantel, shelves and desks from 9" to 24" deep. Fits materials 1-1/2" to 4" thick. Bracket Specs: 1" steel square tube, Mounts to side of stud, Mounting plate is 1/4" thick x 12" long x 3" wide, hot-rolled steel. Screw holes are 1/4" OD, ideal for high strength 1/4" lag bolts. Does not include shelf or screws.

W/ 1" SQUARE ROD
LOAD CAPACITY: 60 LBS.