Marine Light-Type Steel Portholes – Weathertight & Lightweight Solutions
Economical Steel Portholes for Above-Deck Applications
Our marine light-type steel portholes offer a cost-effective yet durable solution for areas requiring weathertight protection above the waterline. Designed for low-pressure environments (under 20Pa), these lightweight portholes are ideal for cabins, superstructures, and deckhouses where full watertight integrity isn’t required.
Key Features & Benefits
✔ Lightweight Steel Construction – 30% lighter than standard portholes
✔ Weathertight Performance – Neoprene gaskets prevent water ingress
✔ Easy Installation – Pre-drilled flanges for quick mounting
✔ Corrosion-Resistant – Powder-coated finish in multiple colors
✔ Standard Sizes – 200-450mm diameters for versatile applications
Technical Specifications
| Clear Size (D) mm | Flange OD (D1) mm | Glass Size (D2) mm | Frame OD (D3) mm | Cutout (D4) mm | Height (h) mm | Gasket (gmax) mm | Bolt Size | Bolt Qty | Steel Wall Cutout mm |
|---|---|---|---|---|---|---|---|---|---|
| φ200 | φ245 | φ250 | φ350 | φ310 | 155 | 50 | M12 | 8 | 253 |
| φ250 | φ295 | φ305 | φ400 | φ364 | 182 | 47.5 | M16 | 8 | 308 |
| φ300 | φ350 | φ360 | φ450 | φ414 | 207 | 45 | M16 | 12 | 363 |
| φ350 | φ400 | φ410 | φ500 | φ464 | 232 | 45 | M18 | 12 | 413 |
| φ400 | φ450 | φ460 | φ550 | φ514 | 257 | 45 | M18 | 12 | 463 |
| φ450 | φ500 | φ510 | φ600 | φ564 | 282 | 45 | M20 | 12 | 513 |
The description/sizes may be different with goods, please check with us when order.
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