Lewmar 399440303 Boat Hatch
Lewmar 399440303 Boat Hatch — Product description
Discover the perfect blend of style, strength, and functionality with the Lewmar Low Profile Hatch, a go-to choice for boat owners seeking reliable access to storage compartments. This square hatch stands out with its modern, streamlined design that hugs the deck without adding bulk, making it especially popular on powerboats where aerodynamics matter. Whether you're outfitting a sleek motor yacht or adding practical vertical access on a sailboat, this hatch delivers exceptional performance in marine environments.
What sets it apart? Its thoughtful engineering ensures seamless integration into flat deck surfaces, while robust construction handles the rigors of saltwater exposure. Imagine effortless opening for quick gear retrieval, secure locking for peace of mind at anchor, and a look that enhances your vessel's aesthetic appeal. Boaters rave about how it transforms mundane storage into something sleek and secure.
Why Boaters Trust This Low Profile Hatch
Built for real-world boating demands, this hatch combines premium materials with innovative features. The corrosion-resistant clear anodized aluminum frame shrugs off harsh marine conditions, from salty sprays to relentless UV rays. Paired with durable acrylic glass, it offers crystal-clear visibility and long-lasting clarity without yellowing over time.
- Sleek, Low-Profile Design: At just 1 inch deep, it minimizes wind resistance and snag hazards with inset hinges and rounded edges—ideal for high-traffic deck areas.
- Superior Sealing Technology: Lewmar's proprietary system creates a watertight barrier, yet allows straightforward acrylic panel replacement if needed, extending the hatch's lifespan without hassle.
- Precision Fit: Mounts flawlessly on surfaces with up to +/- 1mm tolerance, ensuring a professional finish on most boat decks.
- Enhanced Strength: The curved upper frame section boosts structural integrity while giving a contemporary vibe that complements modern hull designs.
- Secure Locking Mechanism: Lockable for added security, protecting valuables in your vertical storage below deck.
Measuring 20-3/16 inches square, it provides generous 17-3/8 x 17-3/8 inch cutout access—plenty of room for stowing lines, fenders, or emergency gear without compromising deck space. The subtle gray finish blends seamlessly with most boat color schemes, maintaining that factory-fresh appearance season after season.
Versatile Applications Across Boat Types
Powerboat enthusiasts appreciate its aerodynamic profile for faster cruises, while sailboat owners opt for it in ventilation roles or compact storage solutions. On smaller to mid-size yachts, it shines as a foredeck hatch, offering quick vertical access without the bulk of traditional designs. Think of it as the multitasker in your marine hardware lineup: storage, light, and occasional escape route, all in one low-slung package.
Pro tip: Position it near cockpit areas for easy reach during maneuvers, or amidships for balanced weight distribution. Its square shape fits neatly into custom deck layouts, avoiding the guesswork of round alternatives.
Effortless Installation for DIY Boaters
Setting up this hatch is straightforward, even for weekend warriors. Start by tracing the 17-3/8-inch square cutout template onto your deck, ensuring the surface is clean and flat within 1mm variance. Secure the flanged base with marine-grade fasteners, apply sealant around the perimeter for that bombproof seal, and attach the lid with its smooth-operating hinges.
The inset hinges prevent lines from catching, and the rounded edges make bedding down a breeze. Test the lock and seals before hitting the water—many owners report completing the job in under an hour. For best results, always bed it on a dry day to avoid moisture traps.
Keep It Performing Like New: Maintenance Essentials
Longevity comes from simple care. Rinse with fresh water after every saltwater outing to prevent buildup. Inspect seals annually, lubricating hinges with marine grease for buttery-smooth operation. The anodized frame resists pitting, but a quick polish restores shine. Acrylic stays clear with mild soap washes—avoid abrasives to prevent scratches.
If the panel needs swapping, the unique sealing system lets you pop it out without tools, a feature that saves time and money compared to welded competitors. With proper upkeep, expect years of reliable service, often outlasting the boat's gelcoat.
Frequently Asked Questions
What are the dimensions of this Lewmar Low Profile Hatch?
The hatch measures 20-3/16 inches in both length and width, with a slim 1-inch depth. The required cutout is 17-3/8 inches by 17-3/8 inches, making it a perfect square fit for deck installations.
Is this hatch suitable for powerboats?
Absolutely—its low-profile design reduces wind drag, ideal for powerboats. Smaller versions work great on sailboats for ventilation, while this size excels on mid-size yachts as foredeck storage access.
What materials is the hatch made from?
It features a corrosion-resistant clear anodized aluminum frame paired with tough acrylic glass for the lid, ensuring durability in harsh marine conditions.
Does the hatch come with a locking mechanism?
Yes, it's fully lockable, providing secure access to your vertical storage compartments and peace of mind when leaving the boat unattended.
What surface tolerance does it require for installation?
It fits flat surfaces with a maximum tolerance of +/- 1 millimeter, allowing for minor deck imperfections without compromising the seal.
How easy is it to replace the acrylic panel?
Lewmar's unique sealing system makes acrylic replacement simple and tool-free, a standout feature for long-term maintenance.
What color is the frame?
The frame sports a sleek gray finish that's subtle and versatile, blending with most boat decks.
The sleekly designed Low Profile Hatch is ideal for use on a powerboat. Smaller ventilation hatches are a better fit for sailboats, while the larger sizes can be used as foredeck hatches on smaller to mid-size yachts.
Lewmar 399440303 Attributes
- Used For: Vertical Access Storage
- Shape: Square
- Diameter: Not Applicable
- Length: 20-3/16 Inch
- Width: 20-3/16 Inch
- Depth: 1 Inch
- Cutout Size: 17-3/8 Inch x 17-3/8 Inch
- Color: Gray
- Material: Aluminum Frame With Acrylic Glass
- Lockable: Yes
Lewmar 399440303 Features & Benefits
- Fit To A Flat Surface With A Maximum Tolerance Of +/- 1 Millimeter
- Hatches Feature Lewmar's Unique Sealing System Allowing Easy Acrylic Replacement
- Corrosion-Resistant Clear Anodized Aluminum Frame With Flange Bases, Inset Hinges And Snag-Resistant Rounded Edges
- Curved Upper Frame Section For Strength And Modern Styling
- Limited 3 Year Warranty
Lewmar 399440303 Installation Instructions
Lewmar 399440303 Technical Bulletins
SKU: NVN-2006415
MPN: 399440303
UPC: 743683106965
Technical specifications
| Brand | Lewmar |
| Model | Lewmar 399440303 Boat Hatch |
| SKU / MFR# | 2006415 |
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