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Hatch, Lewmar Low Profile 13" x 13"

Part #: K1797
$279.99
This 13" X 13" (nominal size) low profile hatch is used on a variety of boats in various locations to provide extra ventilation.

This currently available Low Profile hatch pictured eliminated the friction lever used on earlier Coastline hatches in favor of friction hinges. On smaller hatches such as these, friction hinges incorporate the friction device within the hinge itself, eliminating the need of the separate Friction Lever. Note in "More images" below that the rise of the deck flange where the gasket seals against the flange is positioned at the inboard edge of the deck flange. Compare to the Coastline flange and you will see it is a defining characteristic. Lewmar eliminated the Coastline version of their hatches in 1999 in favor of the Low Profile design. The Coastline hatch is no longer available but the same size Low Profile hatch can be retrofitted for the same size Coastline hatch in earlier boats.

After the early 90's the Catalina 42's used two forward of the mast in the owner's stateroom. Earlier 42's used the Ocean series hatch of the same size in this location. (See part #Z2431)
Known Usage:
• Catalina 28 - 2 ea
• Catalina 30 - 1 to 3 ea
• Catalina 310 - 1 ea
• Catalina 350
• Catalina 36 - 2 ea
• Catalina 42 - 2 ea
• Catalina 400 - 4 ea
• Catalina 445 - 4 ea
• Catalina 470 - 2 ea

There may be other instances where this hatch is used. It is also possible that not every boat described above used this hatch. Please use the dimensions above and the photos below to verify which hatch is actually installed on your boat.
• Outside of lid: 330mm x 330mm (about 13" x 13")
• Outside of deck flange: 310mm x 310mm (about 12-3/16" x 2-3/16")
• Cut out in the deck: 260mm x 260mm (about 10-1/4" x 10-1/4")
• Cutout radius: 42.5mm (about 1-11/16")
• Height off of deck: 25mm (about 1")
• Lens thickness: 8mm (about 5/16")

Please note that these hatches are built in England and made to metric system standard dimensions. All Imperial equivalents are approximate. Lewmar Size 10 Low Profile C-445