Filter King 12x12x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 11.5 x 11.5 x .75"

I thought the filters were well crafted and I especially was appreciative of the care you all took when I realized that I had ordered the wrong filter size. I was thoroughly impressed with you sending me the correct ones and also sending me a return label for the incorrect ones. This was done with one simple phone call. Thank you so very much.

Ordering was easy and delivery was fast

The filters fit perfectly thanks for your help

Very pleased with the quality, price and service. Saves me time and money.

Fantastic! Just what I needed and wanted!

I was able to get the right sizes. They're just air filters.

Good value…long time user.

Amazing product, and service !!!!!

Filter King has a great selection of sizes and high MERV options that are fantastic. The order shipped within a few days of placing the order and arrived quickly. However, be aware that the actual measurement of the 12x12 filter is 11. 5x11. 5 (whereas the ones we've gotten from the home improvement stores are 11. 7x11. 7). That 0. 2 inch difference results in some whistling/whooshing noises when the system is running and air moves around the gap at the edges of the filter. This makes it a little bit louder compared to other filters we've used.

slightly smaller than it should be. small piece of painters tape helps it stay in place and not make a noise when system turns on