150 x 200mm Signature® /Bullfrog 50Ft² Microban® Filter Replacement


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150 x 200mm Signature® /Bullfrog 50Ft² Microban® Filter Replacement

  • Replacement Filter for Signature® – Bullfrog 50sqft Microban®
  • Comes with a closed top with a D style handle & a coarse thread spigot bottom 
  • Made with Microban® antimicrobial protection technology


Filter Dimensions:

Length (Height):150mm(not including handle or spigot)

Width: 200mm

Spigot Internal Diameter: 50mm

Top: With a D style handle

Bottom: Course Thread 

Suitable replacement for the following spa models:

BF models:
251, 251 Swim Spa, 252 Swim Spa, 253 Swim Spa,

331, 362, 451, 454  Swim Spa, 552, 562, 662 and 682

Cyclone models: 
Infinity Swim Spa and Infinity Super Swim Spa

Infinity spa model: W-Stream

Sig Spas models:
AquaZone Series 1, 2 and 3
Platinum Arizona Series
Platinum Cabiolet Series
Platinum Cadillac Series
Platinum Eclipse Series
Platinum Eden Series
Platinum Mirage Series
Platinum Niagara Series 

Sold individually

Unfortunately, we cannot accept the return of filters that have been removed from their packaging because they cannot be re-sold. Additionally, if you order the incorrect filter, you will be responsible for the cost of returning the filters to us.

Please see the video below on how to measure your filters. To avoid disappointment, if you still have doubts, please contact us before purchasing. If you are in a hurry, we suggest chatting with us by clicking on the chat link above.



Selection Tips

  • Check the diameter and thread
  • Check your spa type
  • Check your model number
Still not sure this is the correct part? Contact our spa filters expert.


Model # MCD121
Shipping Weight 1.0000kg
Shipping Width 0.180m
Shipping Height 0.180m
Shipping Length 0.200m
Shipping Cubic 0.006500000m3

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