本商品: Simply Filters 20x20x1 MERV 8,MPR 600,空气过滤器(6 件装) - 实际尺寸:50.2 x 50.2 x 1.9 厘米暖通空调,交流炉空气过滤器 US$34.70US$34.70 (US$5.78/Count) + Aerostar 20x20x1 MERV 8 褶式空气过滤器,交流炉空气过滤器,6 件装(实际尺寸:19 3/4" x 1...
The MERV, MPR, and FPR rating systems each consist of a range of numbers that represent the filtration effectiveness based on the micron size that it can filter out. Below, we’ll break down where the rating systems come from and how to use them when shopping for your next filter. HAVE ...