Lewmar began production of these hatches in 1998 and 1999. From the available records, we believe that Catalina began using them in early 2000. As usual, always check the hatches on your boat to confirm. If Lewmar ran out of the correct hatch at the import warehouse, Catalina may have been forced to use an alternate hatch on your boat to avoid halting the production line.

Fits the following hatch sizes:
• 9-11/16" x 11-7/8" (2 on the Catalina 34, 3 on the Catalina 42)
• 13" x 13" (1 on Catalina 350, 2 each on the Catalina 28, Catalina 34, Catalina 36, Catalina 42, and Catalina 470, 4 each on the Catalina 400)
• 10-11/16" x 16-7/16" (2 each on the Catalina 36 and Catalina 42)
• 19-3/8" x 19-3/8" (2 on the Catalina 350 and 4 each on some Catalina 400's)
• 20-3/16" x 20-3/16" (1 on the Catalina 350, 2 each on the Catalina 320, Catalina 34, Catalina 36, 3 each on the Catalina 42 two cabin, 4 each on the Catalina 42 three cabin and some Catalina 400's)

Details:
• Lewmar Low Profile hatches manufactured by Lewmar beginning in 1998
• Lewmar Medium Profile hatches manufactured by Lewmar beginning in 1999
• Low profile hatches are 25mm ( ~ 1") high off of the deck
• Medium profile hatches are 32mm (~ 1-1/4") high off the deck