Attwood Mk2 Large Shower Sump System 24V 800GPH 5144-1

Genuine Attwood Mk2 large-box shower sump system for 24 V marine electrical installations. It collects grey water from showers or sinks and automatically pumps it to an appropriate discharge point.

Key Features

• Large-capacity sealed sump box
• 800 GPH automatic pump
• X-Air impeller design helps clear air locks
• Removable filter and automatic float-switch operation
• Multiple inlet options for marine drainage systems

Technical Specs

• Voltage: 24 V DC
• Nominal flow class: 800 GPH
• Recommended fuse: 2 A
• Discharge hose: 3/4 in / 19 mm ID
• Box size: large
• Manufacturer: Attwood
• Part number/SKU: 5144-1

Compatibility / Fitment Guide

For 24 V boats requiring automatic collection and discharge of shower or sink grey water. Confirm available mounting space, drain inlet sizes, discharge-hose routing and electrical protection before installation. It is not suitable for a 12 V supply.

Part Number Cross Reference

• Attwood/store reference: 5144-1
• Product family: Shower Sump System Mk2, large box, 24 V, 800 GPH
• Some markets list related 5144-series suffixes; match voltage, flow and box size before substitution.

Frequently Asked Questions

Is this a bilge pump?
It uses an automatic pump but is supplied as a grey-water shower sump system, not a primary bilge pump.

Can it run on 12 V?
No. This model is designed for a 24 V DC system.

What hose is used for discharge?
The specified outlet is for 3/4 in / 19 mm internal-diameter hose.