hillbill
Well-Known Member
My Active Air has one perforated stainless tube inside another with steel endcaps as with most quality filters. eBay filter, my first, was made of hardware cloth and much lighter.I’ve noticed a huge difference between the ipower filter weight (12 pounds) and the phat filter 500 cfm (25 pounds). Not sure, but it’s a substantially heavier filter. I look forward to seeing how many years I can get out of it.