Marine Bolt-Type Aluminum Portholes – Easy Installation & Superior Performance
Premium Bolt-On Portholes for All Vessel Types
Our marine bolt-type aluminum portholes offer the perfect combination of easy installation, lightweight durability, and sleek marine aesthetics. Designed for both aluminum and steel hulls, these corrosion-resistant portholes provide a watertight seal while enhancing your vessel’s appearance.
Key Features & Benefits
✔ Quick Bolt-On Installation – Pre-drilled flanges for fast, secure mounting
✔ Marine-Grade Aluminum – 6061-T6 alloy resists saltwater corrosion
✔ Lightweight Design – 50% lighter than steel portholes
✔ Sleek Modern Appearance – Smooth anodized finish in multiple colors
✔ Universal Compatibility – Fits both aluminum and steel hulls
Technical Specifications
| Clear Size (D) mm | Flange Size (D1) mm | Glass Size (D2) mm | Frame Size (D3) mm | Cutout (D4) mm | Height (h) mm | Glass Thickness (t) mm | Bolt Size | Bolt Qty | Cutout Diameter mm |
|---|---|---|---|---|---|---|---|---|---|
| φ200 | φ245 | φ250 | φ350 | φ310 | 155 | 8 | M12 | 8 | 253 |
| φ250 | φ295 | φ305 | φ400 | φ364 | 182 | 8 | M16 | 8 | 308 |
| φ300 | φ350 | φ360 | φ450 | φ414 | 207 | 10 | M16 | 12 | 363 |
| φ350 | φ400 | φ410 | φ500 | φ464 | 232 | 12 | M18 | 12 | 413 |
| φ400 | φ450 | φ460 | φ550 | φ514 | 257 | 12 | M18 | 12 | 463 |
| φ450 | φ500 | φ510 | φ600 | φ564 | 282 | 15 | M20 | 12 | 513 |
The description/sizes may be different with goods, please check with us when order.
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