Sterling Water Treatment Housing for 4.5 inch by 10 inch Cartridge with 1 inch Ports, Includes Wrench - HJ10-1

Optimize Water Maintenace Sterling HJ10-1 4.5″ × 10″ High-Flow Filter Housing (1″ Ports, Wrench Included)

Build a reliable whole-house or point-of-entry filter using Sterling’s compact, high-flow housing. The HJ10-1 accepts standard 4.5″ × 10″ cartridges (“big blue” size) and features 1″ FNPT ports for low pressure drop in residential and light commercial installs. A built-in pressure-relief button simplifies cartridge changes, and the included wrench speeds service. Rated to 100 psi and 100 °F, it’s a straightforward, durable choice for sediment, carbon, iron, or specialty cartridges (sold separately).

• Brand: Sterling Water Treatment
• MPN: HJ10-1
• Type: High-flow filter housing for 4.5″ × 10″ cartridges
• Size/Capacity: Max flow up to 25 GPM (cartridge-dependent)
• Material/Finish: White sump housing with pressure-relief cap
• Performance: Max pressure 100 psi; max temperature 100 °F
• Connections/Fit: 1″ FNPT inlet/outlet; accepts standard 4.5″ × 10″ cartridges
• Dimensions: 4.5″ × 10″ cartridge format; overall housing length/layout dependent (see brochure)
• Included: Filter housing with pressure-relief button and wrench
• Certifications/Compliance: See Sterling documentation for current approvals
• Warranty: Manufacturer limited warranty (see terms)

High-Flow, Low-Hassle Filtration

With 1″ ports and the 4.5″ × 10″ format, HJ10-1 supports higher service flows with less restriction—ideal ahead of whole-home branches or equipment. Flow capacity depends on the cartridge you choose.

Service-Friendly Design

A top-mounted pressure-relief button vents the housing so cartridges release cleanly, and the included wrench makes opening and tightening fast during routine changes.

Durable Build For Everyday Use

Rated to 100 psi and 100 °F, the housing is specified for typical residential cold-water duty. Always stay within published limits for pressure/temperature.

Installer-Friendly, Standard Threads

1″ FNPT connections integrate with common plumbing materials (copper, PEX, CPVC) using appropriate adapters. Mount vertically with clear space for sump removal.

Sized Right For Popular Cartridges

Accepts most 4.5″ × 10″ sediment, carbon, iron, scale, or specialty cartridges from Sterling and other brands—pick media based on your water goals (taste/odor, sediment, etc.).

Plan Your System

Flow and pressure drop vary by cartridge micron rating and media type. If you need higher capacity, consider the 4.5″ × 20″ HJ20 series; if you want a clear sump, see HJ10-CLEAR.