Purchased the plug and plag 6 person spa rest hot tub and had received it about 4 months ago. Turns out they shipped it without this filter installed. Ended up blowing up the heater element and damaging my pump due to hair and debris getting into the mechanicals. $750 for the 2 hour service call and new heater fixture installed. Pump still doesn't operate as it did when brand new. Unfortunately, purchased the spa through someone off kijiji and we had he shipping address changed to come directly to my house as he decided to move provinces, he had paid the order 6 months prior. Trying to get into contact with Spa Rest now to see if this is all under warranty.