Description
The Lewmar Size 44 Low Profile Hatch with Vent (Part #399440308) is a premium marine deck hatch engineered for reliable performance, sleek aesthetics, and excellent ventilation on powerboats, sailboats, and yachts. Crafted with a silver anodized aluminum frame and light grey (smoke/tint) acrylic lens, this hatch combines modern styling with exceptional durability. Its low-profile design rises only about 1 inch (25 mm) above the deck, delivering a streamlined, flush appearance that minimizes wind resistance and enhances your vessel's clean lines—ideal for power craft or any boat where a discreet, professional look matters.
Features
- Integrated vent for controlled airflow and fresh air circulation without fully opening the hatch
- Friction lever mechanism for easy, secure positioning and stay-open functionality
- Lockable handles inside plus external handles for convenient operation from both sides
- Tough 8mm thick acrylic window for superior impact resistance, UV protection, and crystal-clear visibility
- Watertight construction with proven Lewmar sealing to keep your interior dry
Specifications
| Dimension | Metric | Imperial | Notes |
|---|---|---|---|
| Overall exterior (X × Y) | 512 × 512 mm | 20-3/16" × 20-3/16" | Square outer frame |
| Cut-out required (X1 × Y1) | 442 × 442 mm | 17-3/8" × 17-3/8" | Deck opening size |
| Corner radii (exterior) | R = 72.5 mm | ≈2-7/8" | Outer corners |
| Corner radii (cut-out) | R1 = 42.5 mm | ≈1-11/16" | Inner cut-out corners |
| Height above deck | 25 mm | 1" | Low-profile protrusion |
| Lower frame flange depth | 15 mm | 9/16" | Under-deck lip |
| Acrylic lens thickness | 8 mm | 5/16" | Smoke/grey tinted |
| Hatch weight (approx.) | 4.8 kg | 10.6 lb | Including vent |
Installation notes: Mount on a flat deck surface (±1 mm tolerance). Use appropriate fasteners (M6/1/4" at hinge, 5 mm countersunk screws for frame). The integrated vent is typically positioned on one side—refer to your specific unit or Lewmar's installation guide for precise orientation.
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