Rectangular Marine Porthole - Watertight ABS Yacht Window 400x200mm

In stock
Sale price$39.00
Color: Black
Your Available Cash Credits
Spend $99+ Unlock $7
Spend $350+ Unlock $30
Spend $800+ Unlock $75
Spend $1,500+ Unlock $150
Spend $3,000+ Unlock $350
Spend $5,000+ Unlock $600
*Auto-applied at checkout (Item Subtotal Only)

Check Cart/Checkout for rates. Shipping options (Standard 8-15d / Economy 25-45d) vary by address and weight. Delivery to remote areas is subject to extended transit times. Save ~7% on shipping for orders >100kg (220lbs).

Settlement Protocols

American Express
Apple Pay
Google Pay
Mastercard
PayPal
Shop Pay
Union Pay
Visa

SECURE_ENCRYPTION_PROTOCOL_ACTIVE


Experience superior marine vision with the AirowMarine Rectangular Porthole, engineered for modern yachts. Crafted from durable UV-Resistant ABS polymer, this porthole ensures long-lasting performance against harsh saltwater and sun exposure. Its precision-designed watertight seal guarantees a dry interior, while the integrated Quick-Lock System provides secure, easy operation. With an external frame measuring 400mm x 200mm and an aperture of 320mm x 128mm, it offers a clear view and a seamless universal fit for various vessel types. Available in classic black and white finishes, this nautical hardware combines robust construction with elegant aesthetics, enhancing both functionality and style on your yacht.

AirowMarine rectangular porthole engineering module with dimensions (Frame: 400mm x 200mm, Aperture: 320mm x 128mm) and key features: Watertight Seal, UV-Resistant ABS, Quick-Lock System, showcasing lifestyle installation on a yacht interior.

Frequently Asked Questions

Is this porthole truly waterproof and durable in harsh marine conditions?
Yes, the AirowMarine porthole features a precision-engineered watertight seal and is constructed from UV-Resistant ABS polymer, ensuring superior resistance to saltwater, sun exposure, and preventing leaks in challenging environments.
How secure is the window closure, and is it easy to operate?
Our porthole incorporates a robust Quick-Lock System, designed for rapid and secure latching. This mechanism provides a firm seal and prevents accidental opening, even during vessel movement, ensuring both safety and ease of use.
What are the exact dimensions for installation, and will it fit my existing opening?
The porthole features an external frame dimension of 400mm x 200mm and an internal aperture of 320mm x 128mm. We recommend verifying these precise measurements against your vessel's existing cut-out for a seamless "Universal Fit" installation.

Engineering Specs

REV: 2025.Q4 // TECH-STANDARD
Material_Grade
Marine-Grade UV-Resistant ABS
Surface_Finish
Smooth Molded Finish, Semi-Gloss
UV_Resistance
UV-Stabilized ABS Polymer
Corrosion_Rating
High-Density ABS Polymer, Saltwater Resistant
Compatibility
Yacht, Sailboat, Powerboat
Hull_Integration
Fiberglass, Aluminum, Wood
Standard_Ref
Universal Fit

ESTABLISHED 2017

AirowMarine

Professional Marine Hardware for a Safer Voyage.

Design engineers and marine consultants reviewing technical blueprints and a stainless steel porthole window assembly in an office overlooking a container port.

Our Roots

Hong Kong Based, 8 Years of Expertise

The story of AirowMarine began eight years ago. Headquartered in Hong Kong, we have been dedicated to the global operation and brand building of marine accessories. These eight years of experience have taught us that on the unpredictable sea, every single component carries the trust and safety of the boat owner.

B2B marine hardware production: A massive mirror-polished 316 stainless steel boat anchor being hoisted for quality verification in AirowMarine’s industrial workshop in mainland China.

Supply Chain

Invested Factories in Mainland China

To ensure our products withstand extreme environments, we are more than just a bridge for trade. AirowMarine has invested in its own manufacturing facilities in Mainland China. Leveraging the region's mature and efficient industrial supply chain, we are deeply involved in the entire process—from raw material selection and precision machining to final assembly. We avoid exaggerated claims; instead, through professional logistics and rigorous quality control, we ensure every product delivered to you meets high nautical-grade standards.

Technical quality control inspection showing a Mitutoyo digital caliper measuring a polished marine fitting at 12.45mm precision.

Reliability

Strict QC & Global Logistics

As a provider of marine accessories, our business is intimately connected to the water. We believe that protecting the ocean is not just a slogan; it must be reflected in every detail of our business. Currently, AirowMarine is continuously optimizing our packaging solutions: we maximize the reduction of single-use plastics in our packaging and shipping processes, using recyclable paper-based cushioning materials whenever possible. Our products are built to power your voyage, while our packaging is designed to protect the purity of the blue sea.

Close-up of a 316 stainless steel circular louvered deck vent in eco-friendly honeycomb paper packaging with AirowMarine shipping label.

Our Mission

Protecting the Blue, Plastic-Free

We are aware that there is always room for improvement, but we have never stopped in our pursuit of excellence and environmental responsibility. AirowMarine is committed to providing you with durable, reliable, and eco-conscious marine accessories.

Expert Guidance

Technical help in 24 hours

International Delivery

Secure & Tracked Shipping

Custom Solutions

Tailored parts for your boat

Factory Direct

Invested supply, best value

Proven Quality

Tested for nautical safety