Actual Size: 19-5/8 x 29-5/8 x 7/8
Nominal Size: 20x30x1 Filtration Rating: MERV 11. Comparable to MPR rating 1000 to 1200, or FPR 7 rating. For optimal performance, recommended to change at least every 3 months. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and are manufactured in an engineered gradient structure. The engineered grading structure media supports high dust-holding capacity and long filter service life. Made in the USA. Ideal for residential, commercial, schools, apartments, business, & industrial filtration applications. For premium performance, the 1" inch depth Glasfloss ZL MERV 11 air filter can be used in HVAC systems for commercial and residential properties, school systems, government institutions, apartments, business and industrial applications. The MERV 11 filter features the latest in media technology to achieve a MERV 11 rating per the ANSI/ASHRAE 52.2 Test Standard, while maintaining low pressure drop and long service life. Glasfloss Z-Line Series MERV 11 filter media is laminated to a heavy-duty metal backing that stabilizes the media during operation. ● Actual Size: 19-5/8 x 29-5/8 x 7/8
Nominal Size: 20x30x1 ● Filtration Rating: MERV 11. Comparable to MPR rating 1000 to 1200, or FPR 7 rating. ● Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and are manufactured in an engineered gradient structure. The engineered grading structure media supports high dust-holding capacity and long filter service life. ● Made in the USA. Ideal for residential, commercial, schools, apartments, business, & industrial filtration applications.