Filter Diameter
0mm — 227mm
Filter Length
0 mm — 754 mm
Top Style
Bottom Style
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:
Arctic Spas 12
- SKU: GTF110
- Diameter: 127 mm
- Length: 110 mm
- Top Style: Semi Circle Handle
- Bottom Style: SAE (Coarse) Female (Internal) Thread
Artesian
- SKU: GTF135
- Diameter: 152 mm
- Length: 178 mm
- Top Style: Semi Circle Handle
- Bottom Style: 46mm 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 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 50
- SKU: GTF107
- Diameter: 171 mm
- Length: 205 mm
- Top Style: Semi Circle Handle
- Bottom Style: 59mm MPT (Fine) Thread
Bullfrog 25
- SKU: GTF113
- Diameter: 170 mm
- Length: 148 mm
- Top Style: open
- Bottom Style: open
Bullfrog 35
- SKU: GTF115
- Diameter: 196 mm
- Length: 148 mm
- Top Style: 82mm hole with slot
- Bottom Style: 82mm hole with slot
Bullfrog 50
- SKU: GTF117
- Diameter: 200 mm
- Length: 146 mm
- Top Style: Semi Circle Handle
- Bottom Style: 59mm SAE (Coarse) Thread
Cal Spas 75
- SKU: GTF123
- Diameter: 132 mm
- Length: 409 mm
- Top Style: Semi Circle Handle
- Bottom Style: 59mm MPT (Fine) Thread
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
Caldera Spas 101
- SKU: GTF120
- Diameter: 203 mm
- Length: 420 mm
- Top Style: open
- Bottom Style: open
Canadian Spa 18
- SKU: GTF124
- Diameter: 143 mm
- Length: 160 mm
- Top Style: Semi Circle Handle
- Bottom Style: 46mm SAE UNIQUE Thread
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