ROHN WM4 Wall Mount with 3" Stand Off - For Masts 7/8" to 2-3/4" OD (R-WM4) HEAVY DUTY GALVANIZED STEEL WALL MOUNT PROVIDES 3" CLEARANCE TO THE WALL. MASTS ARE HELD IN PLACE WITH A UNIQUE 'ANTI-TWIST' LOCKING SCREW. CLAMP ACCEPTS 7/8" TO 2-3/4" OD MAST TUBES. WILL STAND OFF ANY ANTENNA MAST WITHIN THIS DIAMETER RANGE THIS MOUNT INCLUDES (4) 1/4" DIAMETER X 2" LONG LAG SCREWS FOR MOUNTING. HOT-DIP GALVANIZED FOR CORROSION PROTECTION.