Atlas za1800645l Whole House Water Filtration System

Product Description

The ATLAS za1800645l is a point-of-entry water filtration housing kit designed for whole-house and light commercial water treatment applications. The housing accommodates 4.5-inch wide by 20-inch long filter cartridges, placing it in the Big Blue class of housings commonly specified for high-flow residential and small commercial systems. The kit ships complete with the hardware and accessories needed for a standard installation, reducing trips to the supply house. It is typically installed by licensed plumbers or water treatment technicians at the main water service entry point, upstream of all distribution lines.

This filtration housing is suited for residential point-of-entry installations as well as light commercial applications where a single filtration stage is required before water reaches fixtures, appliances, or process equipment. The 4.5-inch by 20-inch cartridge size supports a wide range of filter media types, including sediment, carbon block, and specialty media, making this housing adaptable to varying water quality conditions. Its included dual-gauge ports allow monitoring of inlet and outlet pressure to track cartridge loading over time.

Key Features

• Fits 4.5-inch wide by 20-inch long filter cartridges for high-flow capacity
• Includes mounting bracket for wall or structural surface installation
• Ships with housing wrench for safe cartridge change-out
• Two pressure gauges included for differential pressure monitoring across the housing
• Brass insert included for durable threaded port connection
• Drain kit included to facilitate cartridge servicing and housing flush

Compatibility

Designed as a point-of-entry whole-house or light commercial filtration housing compatible with standard 4.5-inch by 20-inch Big Blue style filter cartridges.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the main water supply and relieve system pressure before assembling or servicing the housing. Apply the included lubricant to the housing O-ring at each cartridge change to maintain a proper seal and prevent leaks. Mount the housing using the included bracket on a structurally sound surface, ensuring the unit is accessible for routine cartridge replacement and pressure gauge monitoring.