Rule Shower Drain Box with 1100 GPH Pump – 12V – 99B

Keep your vessel’s shower, sink, or air conditioning condensate draining smoothly with the Rule 99B Shower Drain Box, featuring a powerful 1100 GPH, 12V bilge pump. Designed for efficient gray water management, this compact drain box automatically collects wastewater and pumps it overboard or to an appropriate thru-hull fitting—preventing clogs, backups, and unwanted odors.

The Rule 99B includes a high-capacity 1100 GPH pump for fast, reliable water removal, along with an internal float switch for fully automatic operation. Its durable, impact-resistant housing is built for the harsh marine environment, while the clear lid allows easy inspection and maintenance.

Perfect for boats with enclosed showers or multiple gray water sources, this drain box provides dependable performance and quiet operation, making onboard plumbing simpler and more efficient.

Key Features:

• 1100 GPH Pump: High-capacity water removal for showers, sinks, and AC condensate

• Automatic Float Switch: Turns pump on/off as water levels rise and fall

• 12V Marine System Compatibility: Ideal for most recreational and commercial vessels

• Durable Drain Box: Impact-resistant enclosure with a clear lid for easy inspection

• Quiet, Efficient Operation: Engineered for long service life and low power draw

• Multiple Inlet Ports: Supports various plumbing layouts and gray water sources

• Easy Installation: Compact design fits tight spaces in bilges and under decks

• Model 99B: Trusted Rule Marine engineering and reliability

The Rule 99B Shower Drain Box with 1100 GPH Pump delivers dependable, automatic gray water management—perfect for keeping your boat’s plumbing system clean, efficient, and worry-free.