Chalk SKY32814 INSTALLATION 8-Inch Heavy-Duty Wall Mount Kit for TV Antenna Mast Assemble the base of the Y mount. Drill a 3/16” hole for each mounting screw. Assemble the base of the tripod mount. & Fasten the mounting brackets to the wall. M-B Use stud finder to locate studs. Secure antenna mast to mounts using U-bolts and plates. i Align bracket mounts with studs and mark drilling locations 0 § Drill the small lag screw through the U-bolt plate and mast to prevent torsion.