Exterior mail drops may be installed on either side of the garage door and must be metal, black matte finish. The design must conform to those manufactured by MACKANDBURG-DUNCAN (called “M-D Drops”) and may be 10: or 13” wide. The outside bottom of the drop must measure 39” from the bottom edge of the siding of that panel and centered between the vertical frames. If studs must be cut to install the mail drop, the opening should be reframed to maintain structural integrity. No trim is to be altered or removed in order to accommodate the mail drop. Note: The US Postal Service will not deliver mail into any mail drops where the rural type boxes are now being used.