The aluminum plate to which the halyard cover is attached measures 6" wide, 1/8" thick and the height is determined by the length of the halyard cover. These units are designed to be mounted using thru wall bolts or expansion shields utilizing 3/8" diameter threaded rod. Expansion shields are supplied as standard. If thru wall bolts are required please specify length. All nuts, washers & lock washers are supplied for a complete installation. Standard colors are Silver, or painted to match Clear, Bronze #313, White or Black. All Wall Mounted Halyard Covers are made to order. Please allow 1 - 2 weeks after approval for shipping.