The company now offers MERV 13, MERV 14, and MERV 15 mini-pleat air filters in 1-, 2-, and 4-inch sizes. These panel air filters are made of 100-percent plastic. They have rigid frames that can be gasketed to eliminate filter bypass, the manufacturer states. According to the company, the air filters' large surface areas allow for extended filter life and low pressure drop, making the mini-pleat air filters a practical solution for green buildings., 12999 Murphy Rd., Bldg. I-1, Stafford, TX 77477; 888-933-0100.

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