🔍 Backflow Enclosure Size Finder

Enter the inside dimensions you need and we'll show you matching enclosures.

What inside dimensions do you need?

Enter the minimum interior length, width, and height required for your enclosure (in inches).

Length (in) longest side needed

Width (in) front-to-back needed

Height (in) floor to top needed

Matching Enclosures

How to Size a Backflow Enclosure

Start by measuring the full installed assembly — including the backflow preventer, shutoff valves, test cocks, strainers, and any unions. That total measurement is your minimum inside clearance need. Then add at least 6 inches on each dimension so technicians can reach test cocks and perform annual testing without having to remove the enclosure.

All enclosures ship free.