Primacoustic Offset Impaler Mount - 8 pcs Material: 20 gauge galvanized steelDimensions: 3" (76mm) x 5" (127mm); Offset = 3.5" (89mm) from wall surfaceAttachment Points: 4 (Use an appropriate fastener for wall surface)Max Load Limit: 12 lbs. (5.4 kg.) Dependant on wall fastenerNumber per box: 8 per boxOrder Number: F101-1035-00 The Offset impaler features a U-shaped design that elevates the noise absorbing panel from the wall by 3 5" making it easy to align with typical 2x4 studs The panel is held in place using a series of sharp protruding darts that penetrate the panel to secure it during installation To ensure panels do not get dislodged after installation, applying a dab of construction adhesive to the impaler darts during the mounting process adds a level of security and reduces opportunity for tampering