Salsbury Industries 10 Door High Surface Mounted 4C Horizontal Mailbox with Parcel Lockers, Black, 31.75" W x 38.5" H x 17" D Concealed Slides it suits indoor and outdoor Item Weight:.625 it suits indoor and outdoor residential spaces ) 70 lb Returnable 180 Day Total BTU 5000 Btu Voltage (volts) 120 Color Family Black Assembly Required No Heat Output (BTU hour) 5000 Area Heated (Sq Specification Details Series 3800 Series Surface Mounted 4C Horizontal Mailboxes Configuration 10 door high unit with two parcel lockers (PL4 and PL4 MB4 13 3 4" H x 12 3 4" W Outgoing Mail 11 3 4" W x 3 4" H slot with weather protection hood Locks Heavy duty cam locks