Where is the serial number at on a 1972 holiday rambler 27 ft?

On a 1972 Holiday Rambler 27 ft trailer, the serial number is typically located on a metal plate or sticker attached to the front or rear of the trailer, often near the hitch or on the frame. You may also find it inside the trailer, such as on the wall near the entry door or in a cabinet. It's best to check both exterior and interior areas for the serial number. If you're having difficulty locating it, refer to the owner's manual for more specific guidance.