130mm L x 200mm D Sundance Spas 50 Disposable Microclean I Filter 4 Pack

4 Pack of filters : 12-16 months supply 
Suits 2002+ Sundance Spas 
130mm H x 200mm OD x 120mm ID 
Microclean close weave fibre for ultra fine filtration via circulation pump 24hrs per day.
This filter is NOT washable/cleanable and MUST be disposed of and replaced every 3-4 months with Drain/Refill of your spa. 
Only exceptional circumstances would allow a longer life. Replacement is critical to ensure proper filtration, heating , ozonation and circulation pump performance. 
Replacement procedure - wait for one week AFTER drain/refill before replacing - this extra week with new water prevents premature clogging of the new filter - the old used one absorbs the impurities from the fresh water supply and is then thrown out. This prolongs quality filtration.