It sounds like you have one of the older style decks that predate the newer Pro G and Pro H decks (I think these came out in 2002). The deck is a basic rectangle shape with a nice squared off discharge opening (no complicated curves or convolutions). You can use part number GCJD36 for this mower. The opening on this catcher is 14 inches long and about 4.5 inches tall. It uses a bracket that is 10 inches long and 1.5 inches wide. The bracket bolts to the top of the deck above the opening. List price is $359.00. capacity is 4.15 cubic feet.