17_1/2x27x1 Trane Replacement MERV 7 AC Furnace Filters 6 Pack control system " which gives the inside

" which gives the inside of the lens its distinctive purple sheen

• Perfect or both preventative applications and major fungal infestations

Rounded corners for easy cleaning

The insulated damper uses gravity-fed shutters that close the opening when the whole house fan is not in use

Twister T2 Upper Shroud

17_1/2x27x1 Trane Replacement MERV 7 AC Furnace Filters 6 Pack control system " which gives the insideNordic Pure MERV 7 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters