Product: 70" Long x 3" Thick Super Duty Steel Hidden Mantel Hardware - for 72 to 81 inch Mantel - Manufactured in USA
Brand: Shelfology
Color: Black
70 inch Super Duty Floating Mantel Hardware with 3 inch high backbar (Hardware only): Our hidden mantel hardware is engineered to support solid or hollow slabs, beams, and box construction mantels. Fits 72 through 81 inch Floating Mantels. Our mantel hardware is constructed of ¼" thick steel, have 90° junctions to fit precisely into mortises or dados, and patented set-through construction with 360° welds. This hardware supports a multitude of floating mantel styles and sizes without visible support.
Hidden mantel hardware, engineered to support mantels that are 3 1/2" thick, and from 7" to 14" deep. The original patented bracket
Made to install on masonry, sheetrock, plaster, and paneled walls
Supports a maximum distributed load up to 300 lbs., when installed correctly
Screw holes are set 1" OC from each end and continue 4" OC down the length of the hardware. Countersunk screw holes are ³∕16" OD
A set screw hole can be drilled in the outside rods to screw the mantel to your hardware. You can also glue the mantel onto the hardware with silicone. Both are equally effective, glue is the easiest method

Search query: 72 mantel
Relevance: Exact