This replacement air conditioner shroud fits many of the Coleman Mach series air conditioners. And attaches from the top with the original 4 mounting bolts. Overall product dimension is 42" x 30" x 12.75" high. The hole to hole dimension on the top is 20.85" lengthwise and 17.75" for the width. This replacement Coleman shroud fits a large selection RVP Coleman Mach air conditioners including the following models:8332 Series Mach 1, 8333A Series Mach 3 Plus Air Conditioner, 8333B Series Mach 3 Plus, 8333C Mach 3 Plus, 8335 Series Mach 15 Air Conditioner, 8335C Mach 15, 8373 Series Air Conditioner, 8473 Series Roughneck International Air Conditioner, 8473 Roughneck International Series with R-407C, 8433 Series Mach 3 Plus Roughneck, 8533 Series Sea Mach Air Conditioner, 8534 P.S. Heat Pump Series, 8535 Series Heat Pump, 8632 Series Mach 1 P.S., 8633 Series Mach 3 Power Saver Air Conditioner