The Glasfloss 16x16x1 MERV 10 Standard Capacity ZL Pleat ZLP16161 is a box of 12 pleated air filters designed for use in air conditioners and furnaces. With a MERV rating of 10, these filters offer electrostatic filtration technology to effectively capture airborne particles and improve indoor air quality. Made with synthetic filter media and a paper filter frame, these filters are designed to last 3 months and are ideal for maintaining a clean and efficient heating and cooling system. The Z-Line model, with an exact size of 15-1/2″ x 15-1/2″ x 7/8″, ensures a perfect fit for your home improvement needs.