Filter Cartridge Fit Checker
Measure the cartridge you use now, enter the numbers, and this checker tells you which of our housings and cartridges match it. It uses the same sizes as our filter cartridge size guide. If the result says to check with us, email the numbers and a photo before you order.
How to measure
- Outside diameter across the widest part, in mm.
- Overall length including any end gaskets, in mm.
- Look at both ends: flat and open, or with an O-ring plug or fin.
The pipe port size (for example 1 in NPT) does not decide which cartridge fits. Choose the port to match your pipework; see NPT vs BSP threads.
The sizes the checker uses
| Family | Outside diameter | Housing lengths |
|---|---|---|
| 2.5 in standard | 60 mm ±1 mm | 5, 10, 20 in |
| 4.5 in jumbo | 102 mm ±1 mm | 10, 20, 30 in |
| 133 mm large-bore | 133 mm | 20, 30 in |
Not sure? Send the measurements and a photo to alicia@ssfilterhousing.com or use request a quote.