28x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack ventilation and ducting These come complete with every

These come complete with every Original

53 x 17 x 31 cm (21 x 7 x 12 in) Dimensions

heavy duty casters

and other small instruments with you on the go

Control pH levels

28x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack ventilation and ducting These come complete with everyNordic Pure Custom MERV 7 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition