Fit the filter chamber on my furnace perfectly. I only change them once a year because my furnace & Central AC hardly runs at all, I have insulated every interior wall and floor/ceiling to R30-R45, have hybrid solar/120 V attic fan all windows and doors foam sealed, garage doors R19 insulated with garage on west end of home to break the wind, exterior walls all R30, home is oriented E-W, 40 windows all high R, I believe in energy efficiency. Basement all insulate to R18. Hardly any dust.
Love Filterbuy the filter is always in stock and easy to order and the speed of getting my filter is fast. Great service great reminders of reordering makes it nice to get them within the every 6 months I like to replace.
I have purchased FilterBuy air filters for a couple of years now. Made in USA and priced right. Replaced furnace this fall and the size of the filter has changed. Shopped to see if still the best value. Upgrades to the MRV13 filter, still made here and a great price. The company made a mistake in my favor and didnt want me to compensate them. FilterBuy is an outstanding company to purchase from.