How to Measure Your Cartridge
Step 1
Measure outside diameter and also inside diameter (ID) of hole.
Step 2
Measure length from the outside of the cartridge (not including any raised steps, handles, or threads).
Step 3
If it doesn’t have a hole in each end, then determine the types of endcaps. Common types are:
Filter Diameter
152mm — 152mm
Filter Length
172 mm — 172 mm
Top Style
Bottom Style
Arctic Spas 12
- SKU: GTF110
- Diameter: 127 mm
- Length: 110 mm
- Top Style: Semi Circle Handle
- Bottom Style: SAE (Coarse) Female (Internal) Thread
Artesian 35
- SKU: GTF104
- Diameter: 152 mm
- Length: 203 mm
- Top Style: Semi Circle Handle
- Bottom Style: 59mm MPT (Fine) Thread
Artesian 40
- SKU: GTF105
- Diameter: 152 mm
- Length: 178 mm
- Top Style: open
- Bottom Style: 59mm MPT (Fine) Thread
Artesian 41
- SKU: GTF106
- Diameter: 152 mm
- Length: 197 mm
- Top Style: Semi Circle Handle
- Bottom Style: 59mm MPT (Fine) Thread
Artesian 32
- SKU: GTF103
- Diameter: 178 mm
- Length: 205 mm
- Top Style: Semi Circle Handle
- Bottom Style: 59mm MPT (Fine) Thread
Artesian 50
- SKU: GTF107
- Diameter: 171 mm
- Length: 205 mm
- Top Style: Semi Circle Handle
- Bottom Style: 59mm MPT (Fine) Thread
Jazzi 25
- SKU: GTF112
- Diameter: 143 mm
- Length: 176 mm
- Top Style: Closed
- Bottom Style: 49mm SAE (Coarse) Thread
Bullfrog 35
- SKU: GTF115
- Diameter: 196 mm
- Length: 148 mm
- Top Style: 82mm hole with slot
- Bottom Style: 82mm hole with slot
Marquis Spas 50
- SKU: GTF241
- Diameter: 132 mm
- Length: 317 mm
- Top Style: Semi Circle Handle
- Bottom Style: 59mm MPT (Fine) Thread
Bullfrog 25
- SKU: GTF113
- Diameter: 170 mm
- Length: 148 mm
- Top Style: 82mm hole with slot
- Bottom Style: 82mm hole with slot
Cal Spas 75
- SKU: GTF123
- Diameter: 132 mm
- Length: 409 mm
- Top Style: Semi Circle Handle
- Bottom Style: 59mm MPT (Fine) Thread
Caldera Spas 101
- SKU: GTF120
- Diameter: 203 mm
- Length: 420 mm
- Top Style: open 79mm
- Bottom Style: open 79mm
Caldera Spas 100
- SKU: GTF119
- Diameter: 203 mm
- Length: 420 mm
- Top Style: Semi Circle Handle
- Bottom Style: 89mm Lipseal
Caldera 50
- SKU: GTF121
- Diameter: 178 mm
- Length: 274 mm
- Top Style: Semi Circle Handle
- Bottom Style: open 67mm
Caldera 75 new style
- SKU: GTF122
- Diameter: 178 mm
- Length: 374 mm
- Top Style: Semi Circle Handle
- Bottom Style: open 67mm
Waterway 45
- SKU: GTF153
- Diameter: 135 mm
- Length: 249 mm
- Top Style: open 54mm
- Bottom Style: open 54mm
Canadian Spa 18
- SKU: GTF124
- Diameter: 143 mm
- Length: 160 mm
- Top Style: Semi Circle Handle
- Bottom Style: 46mm SAE UNIQUE Thread
Coast Spas 100
- SKU: GTF143
- Diameter: 135 mm
- Length: 535 mm
- Top Style: open 54mm
- Bottom Style: open 54mm
Coast Spas 135
- SKU: GTF145
- Diameter: 135 mm
- Length: 754 mm
- Top Style: open 54mm
- Bottom Style: open 54mm
Coleman 50
- SKU: GTF141
- Diameter: 178 mm
- Length: 225 mm
- Top Style: open 54mm
- Bottom Style: Male Slip Fitting
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