5"-7" Boat Porthole Window AISI 316 SS Round Portlight Anti-Glare Marine Portlight Hatch 8mm Smoked Acrylic for Yacht Cabin RV

316 Stainless Steel Round Boat Porthole

8mm Smoke Gray Acrylic Glass | Fits 7mm - 12mm Deck Thickness for Yacht & RV

▶ HAND MIRROR-POLISHED AISI 316 STAINLESS STEEL

Precision-cast from solid 316 marine-grade stainless steel with a high mirror polish. Delivers maximum corrosion resistance against harsh saltwater and salt spray.

▶ 8MM HEAVY-DUTY SMOKE GRAY ACRYLIC

Fitted with an 8mm thick high-impact acrylic lens. Filters out harsh glare and UV rays while providing extreme pressure resistance against crashing ocean waves.

▶ VERSATILE 7MM–12MM PANEL THICKNESS FIT

Features a 10-12mm spigot insertion depth. Fits 7mm to 12mm (up to 15mm max) hull walls with a sleek flush fit or slight watershed edge for easy runoff.

▶ NYLON LOCKING HANDLES & EPDM RUBBER SEAL

Equipped with friction hinges and heavy-duty nylon handles. Lined with a watertight EPDM rubber gasket to ensure a 100% leak-proof seal during ocean storms.

▶ PRECISION 5" / 6" / 7" CUT-OUT SELECTION

Available in 3 standardized cut-out diameters (Φ126mm, Φ151mm, Φ175mm). Perfect for yacht hull portholes, boat cabins, and campervan side windows.

📐 SELECTION & PANEL THICKNESS FIT GUIDE

1. Hull / Deck Thickness Fit (Spigot depth ~10mm-12mm):

• 7mm – 9mm Hull: Protrudes slightly (1-3mm), allowing easy rainwater runoff.

• 10mm – 12mm Hull: Fits completely Flush Fit against cabin wall.

• 13mm – 15mm Hull: Mounts securely using marine sealant (3M 4200/5200).

2. Cut-out Hole SKU Selection:

• 5" SKU: Cut-out Φ 126mm (5.0") | Outer Frame Φ 157mm (6.2")

• 6" SKU: Cut-out Φ 151mm (6.0") | Outer Frame Φ 184mm (7.2")

• 7" SKU: Cut-out Φ 175mm (7.0") | Outer Frame Φ 210mm (8.3")

# PORTLIGHT TECHNICAL SPECIFICATIONS

CODE: 12-03021 (5")
Frame Size (a): Φ 157mm (6.2 in)
Cut-out Size (b): Φ 126mm (5.0 in)
Spigot Depth (c): 10mm - 12mm
Panel Thickness (d): 7mm - 12mm (Max 15mm)

CODE: 12-03022 (6")
Frame Size (a): Φ 184mm (7.2 in)
Cut-out Size (b): Φ 151mm (6.0 in)
Spigot Depth (c): 10mm - 12mm
Panel Thickness (d): 7mm - 12mm (Max 15mm)

CODE: 12-03023 (7")
Frame Size (a): Φ 210mm (8.3 in)
Cut-out Size (b): Φ 175mm (7.0 in)
Spigot Depth (c): 10mm - 12mm
Panel Thickness (d): 7mm - 12mm (Max 15mm)

Key Product Highlights

🌊 Solid AISI 316 Stainless Steel Construction

Molybdenum-alloyed marine stainless steel with mirror polish eliminates pitting corrosion in warm saltwater.

⚓ 8mm High-Impact Smoke Acrylic Lens

Shatterproof under crashing ocean waves while filtering glare and UV rays for interior cabin comfort.

🛠️ Versatile 7mm to 12mm Panel Fitment

Accommodates varied boat hull and RV side wall thicknesses with a clean flush fit or slight watershed rim.

AISI 316 STAINLESS STEEL VS. 304 / PLASTIC PORTLIGHTS