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Engineered for modern boats where every inch counts, this Lewmar Size 60 low profile hatch flange base delivers unobtrusive access and ventilation without compromising on strength or style. Ideal for deck installations on sailboats, yachts, or power vessels, its minimalist 1-inch height hugs the surface, reducing drag and enhancing aesthetics. The smoke grey acrylic pane cuts glare while offering crystal-clear visibility, and the self-supporting design means no extra stays or props needed for everyday use.
Crafted with a robust aluminum frame, it withstands harsh marine environments—salt spray, UV exposure, and constant flexing from waves. The 180-degree opening provides generous vertical access for storage below decks, making it perfect for cabins, heads, or lazarettes. Secure it with the built-in lock for peace of mind at anchor or underway.
| Support System | Lower Frame (in) | Acrylic Colour | Hatch Weight (lb) | Acrylic Window Thickness (in) |
|---|---|---|---|---|
| Self Supporting | 9/16 | Smoke Grey | 14.1 | 5/16 |
| Length X (in) | Width Y (in) | Height Z (in) | Radii R (in) | Cut-Out Length X1 (in) | Cut-Out Width Y1 (in) | Cut-Out Radii R1 (in) |
|---|---|---|---|---|---|---|
| 22 11/16 | 22 11/16 | 1 | 2 7/8 | 19 15/16 | 19 15/16 | 1 11/16 |
These measurements ensure a factory-like install—square and square, with radiused corners that match curved deck molds common on performance hulls.
Prep your deck for success: aim for a flat surface within +/- 1mm tolerance to avoid binding or leaks. At the hinge, secure with M6 (1/4-inch) fasteners for pivot strength. For the lower frame, opt for 5mm countersunk No.10 UNC or 2 BA screws—pre-drill to prevent gelcoat cracks. Seal generously with marine-grade polyurethane around the flange for watertight integrity that lasts seasons.
Pro tip: Dry-fit first, then bed in place. The low profile flange distributes load evenly, minimizing stress on thin cored decks. Most installs take under an hour with basic tools, but always torque fasteners to spec to handle slamming in chop.
Beyond specs, this hatch shines in real-world abuse: cockpit washes, tropical storms, and years of daily openings. Pair it with Lewmar's quick-action handles for one-handed operation, even with wet hands.
Rinse with fresh water after every sail to flush salt. Lubricate hinges annually with marine grease—PTFE-based for low friction. Inspect seals yearly; replace if they harden. Acrylic cleans easily with soft cloth and ammonia-free soap—avoid abrasives to preserve clarity. In storage, prop slightly open to prevent mildew in the locker below.
The cut-out measures 19 15/16 inches by 19 15/16 inches, with 1 11/16-inch radii for a precise, curved-edge fit.
No, it's fully self-supporting, eliminating the need for gas struts or manual props in most conditions.
The smoke grey tinted acrylic is 5/16 inch thick, providing durability and reduced glare for better visibility.
It weighs a lightweight 14.1 pounds, making it easy to handle during installation or removal.
The lid opens a full 180 degrees, offering unobstructed vertical access to storage compartments.
Use M6 (1/4-inch) at the hinge section and 5mm CSK No.10 UNC or 2 BA screws for the lower frame.
Yes, the anodized aluminum frame is corrosion-resistant, perfect for marine environments including saltwater exposure.
Absolutely—its low profile design promotes airflow while the tinted pane helps regulate interior temperatures.
| Support System | Lower Frame (in) | Acrylic Colour | Hatch Weight (lb) | Acrylic Window Thickness (in) |
| Self Supporting | 9/16 | Smoke Grey | 14.1 | 5/16 |
Dimensions
| Length X (in) | Width Y (in) | Height Z (in) | Radii R (in) | Cut-Out Length X1 (in) | Cut-Out Width Y1 (in) | Cut-Out Radii R1 (in) |
| 22 11/16 | 22 11/16 | 1 | 2 7/8 | 19 15/16 | 19 15/16 | 1 11/16 |
Mounting Instructions
Fit to a flat surface with a maximum tolerance of +/- 1mm. Fastening size at hinge section use M6 (1/4"). Fastening size for lower frame use 5mm CSK screw No.10 UNC 2 BA.
Ships within 48 hours · Estimated delivery Jun 27 - Jul 2
US$40
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