4" Marine Boat Deck Plate Inspection Port UV Resistant ASA Anti-Skid White 101mm
MD1312/4W
- Dispatched in 2-3 days
- 30 Day Return Policy
- In stock, ready to ship
- Backordered, shipping soon
4" Deck Plate Inspection Port
Premium ASA UV-Resistant Construction
This high-performance 4-inch deck plate provides a reliable, watertight access point to below-deck compartments, valves, and fuel lines. Engineered for the harshest marine environments, this unit is manufactured from ASA Plastic, which offers significantly higher resistance to UV yellowing and impact damage than standard ABS alternatives.
Key Features
- ✔ ASA Material: Superior UV & chemical resistance
- ✔ Anti-Skid: Diamond cross-cut pattern for safety
- ✔ Watertight: Integrated Nitrile O-ring seal
- ✔ Quick Access: Threaded screw-out lid
Technical Specs
| Inner Diameter (ID): | 102mm (4.02") |
| Outer Diameter (OD): | 156mm (6.14") |
| Cut-Out Diameter: | 115mm (4.53") |
| Material: | ASA Plastic (UV Stabilised) |
| Colour: | Pure White |
Compatibility / Fitment Guide
| Make/System | Model/Application | Notes |
|---|---|---|
| Marine Vessels | Motorboats, Yachts, Sailboats | Ideal for deck or bulkhead mounting |
| Watersports | Kayaks, RIBs, Canoes | Perfect for storage access or drainage |
| Leisure/Utility | Caravans, RVs, Horseboxes | Used for water tank or service access |
OEM Cross Reference
| SeaFlo Reference: | SFDP1-04-01 / SFRH1-004-01 |
| SeaDog Reference: | 335441-1 |
| Osculati Reference: | 20.204.00 |
| T-H Marine Reference: | RS-4-DP / DPS-4-1-MP |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part, manufactured using high-grade ASA plastic to meet or exceed original equipment (OE) standards for durability and fitment.
How do I know if it is compatible?
We recommend checking the cut-out diameter. This plate requires a 115mm (4.53") hole. If your existing hull or deck opening matches this, it is a guaranteed fit.
Is this suitable for floor/deck installation where people walk?
Yes, the plate features a reinforced construction with a diamond cross-cut anti-skid surface, making it safe for horizontal deck mounting and high-traffic areas.
Note: Mounting screws are not included. We recommend using 316 Stainless Steel screws and marine-grade sealant for installation. Distributed by 4boats.co.uk.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
