"This company makes "UNDERSIZED" filters, so BUYERS BEWARE! They say their filters are sized "Industry Standard", but they ARE NOT! Their 14x20 filters are 1/4"-5/16" less in Width & Length dimensions as compared to other manufacturer's filters (i.e. Filtrete, etc.). Therefore, they "rattle" and fall against the ceiling grate making sounds when the air cuts off. They DO NOT FIT SNUG against the standard 14x20 filter framed opening. Very, Very ANNOYING.
Have installed ceiling filters in houses for 30+ years and have never purchased a filter this undersized from any retail store or any other online supplier. Even the actual measured size of their own filter is 1/16" less in width & length than what is listed on their website. This is obviously Very Poor-Quality standards as compared to other filter manufacturers that I have ordered from over the last several decades!.
I have therefore wasted $62+ on 12 of these deficient filters and with no recourse from Factory Direct Filters. VERY BAD $$ LEARNING EXPERIENCE & BUYERS BEWARE!!"