Lewmar - Size 54 Low Profile Hatch Flange Base

Reliable and Stylish Marine Hatch for Optimal Ventilation

The Lewmar Size 54 Low Profile Hatch Flange Base is designed to provide superior ventilation and natural light while maintaining a sleek and durable structure. Crafted for marine applications, this self-supporting hatch combines robust construction with a modern aesthetic, making it an excellent choice for boats and yachts. Its smoke grey acrylic window ensures a balance between privacy and light diffusion, while the low-profile design reduces wind resistance, enhancing aerodynamics.

Built for easy installation on flat surfaces, this hatch offers a flange base that ensures a secure and watertight fit. The self-supporting system allows smooth and effortless operation, making it an ideal addition to any marine vessel requiring reliable, high-quality hatches.

Durable and Precise Construction

Engineered with precision, this hatch is constructed to withstand marine environments. The 5/16-inch thick acrylic window enhances durability while providing clarity and resilience against harsh sea conditions. The lower frame thickness of 9/16 inches ensures structural integrity and long-term performance. With a total hatch weight of 10.8 lbs, it remains lightweight without compromising strength.

Optimized Dimensions for a Secure Fit

• Overall Length (X): 18 3/16 inches
• Overall Width (Y): 22 11/16 inches
• Overall Height (Z): 1 inch
• Corner Radii (R): 2 7/8 inches
• Cut-Out Length (X1): 15 7/16 inches
• Cut-Out Width (Y1): 19 15/16 inches
• Cut-Out Radii (R1): 1 11/16 inches

These precise dimensions ensure a tight, secure fit, making it compatible with various marine installations.

Highlights

• Self-supporting design for easy operation and stability
• Smoke grey acrylic window for privacy and light diffusion
• 5/16-inch acrylic thickness for added strength and durability
• Lightweight construction at just 10.8 lbs
• Flange base for a secure and watertight installation
• Low-profile structure to minimize wind resistance

Easy Installation and Secure Mounting

This hatch is designed to be installed on a flat surface with a maximum tolerance of ±1mm. For proper installation, the following fastening sizes are recommended:

• Hinge section: M6 (1/4-inch) fasteners
• Lower frame: 5mm CSK screw No.10 UNC 2 BA

These specifications ensure a secure and reliable fit, providing long-term stability for marine applications.

This Lewmar Size 54 Low Profile Hatch Flange Base is an excellent choice for boat owners seeking a durable, stylish, and functional hatch that enhances both ventilation and aesthetics while withstanding harsh marine conditions.

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.

Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.