4Boats
Attwood 4145-1 Marine Shower Sump System 750 GPH 24V Standard Box Drainage
Attwood 4145-1 Marine Shower Sump System 750 GPH 24V Standard Box Drainage
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Attwood 4145-1 Shower Sump 750 GPH 24V
Standard Box Automatic Gray Water System
The Attwood 4145-1 Shower Sump System is a high-capacity, 24-volt drainage solution designed to manage grey water from showers and sinks on marine vessels. This "Standard Box" unit comes pre-assembled with a powerful 750 GPH pump and an integrated automatic float switch, ensuring efficient water removal without manual intervention. The compact design and multiple inlet options make it a versatile choice for both new installations and direct replacements of legacy Attwood units.
Key Features
- ✔ 750 GPH Capacity: High-volume flow for rapid drainage.
- ✔ Multi-Port Inlet: Accommodates 3/4", 1", 1-1/8", and 1-1/2" hoses.
- ✔ Automatic Operation: Includes internal float switch.
- ✔ Easy Maintenance: Clear lid and removable mesh strainer for quick inspection.
- ✔ Safety Certified: Meets or exceeds ABYC and USCG standards.
Technical Specs
| Flow Rate | 750 GPH |
| Voltage | 24V DC |
| Fuse Size | 2 Amp |
| Outlet Size | 3/4" (19mm) |
| Wire Lead | 22" (approx. 56cm) |
| Box Dimensions | 8-1/8" W x 4-1/2" H |
Compatibility / Fitment Guide
| Application | Voltage System | Notes |
|---|---|---|
| Marine Showers | 24V DC Only | Ideal for below-waterline drainage. |
| Galley Sinks | 24V DC Only | Multiple inlets allow shared drainage. |
| OEM Replacement | 24V DC Only | Direct swap for older Attwood 4145 units. |
OEM Cross Reference
| Attwood MPN | 4145-1 |
| Attwood Legacy | 4145 |
| Other References | S750 24V Standard Sump System |
Questions & Answers
Is this a genuine original part?
Yes, this is a genuine Attwood Marine component, ensuring full compatibility with Attwood plumbing and electrical systems.
How do I know if it is compatible?
We recommend checking the SKU/MPN (4145-1) and ensuring your vessel operates on a 24V electrical system. This unit is the "Standard Box" version.
Can I connect multiple drains to this box?
Yes, the box features multiple inlet ports (3/4", 1", 1-1/8", and 1-1/2") allowing you to connect several sinks or a shower and sink to the same unit simultaneously.
Note: Please verify your original part number and system voltage (24V) before purchasing. For any technical queries, contact us at 4boats.co.uk.
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