A long-handled wrench for opening and tightening 3/4″ port filter housings and RO membrane housings. Reaches deep into tight mounting locations where a standard wrench can’t. Compatible with ~50% of standard RO housings and multiple MWC system models.

What it does

This long-reach wrench is built for housings that are mounted in tight, hard-to-reach locations — under sinks, behind panels, or on wall-mounted brackets where a standard short wrench won’t fit. The extended handle gives you the reach and leverage to loosen sumps and housing caps without removing the entire system.

Compatible with 3/4″ port slim filter housings and RO membrane housings. Fits approximately 50% of standard RO housings (Stages 1–3) and multiple MyWaterClub system models including MWC-DUAL-B34, WHS34, HOUSING34, and more. Not a universal fit — housing shape varies by manufacturer.

Key benefits

• ✓Long reach — 14″ handle for deep, tight mounting locations
• ✓Fits 3/4″ port slim housings & RO membrane housings
• ✓Compatible with MWC systems: MWC-DUAL-B34, WHS34, HOUSING34 & more
• ✓Fits ~50% of standard RO housings (depends on housing design)
• ✓Durable construction for repeated use
• ✓Essential for wall-mounted or under-sink systems with limited access

Specifications

Compatibility

Often used with

Good to know before you buy

• Turn counter-clockwise to loosen, clockwise to tighten.
• Use moderate force. Over-torquing can crack plastic housings.
• Shut off water and relieve pressure before opening any housing.
• If the wrench doesn’t grip your housing, the housing shape is incompatible — not all designs have the same grip profile.