For exceptional filtration reliability and performance, the 19-7/8 x 21-1/2 x 1 Glasfloss ZL MERV 10 air filter can be used in HVAC systems for your home or business. The MERV 10 filter features the latest in media technology to achieve a MERV 10 rating per the ANSI/ASHRAE 52.2 Test Standard, while maintaining low pressure drop and long service life. Glasfloss Z-Line Series MERV 10 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. The Filtration Rating is MERV 10 and is comparable to MPR rating of MPR 600 to 800, or FPR 5-6 rating. Glasfloss Industries filters incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and are manufactured in an engineered gradient structure. The thermally-bonded fibers do not absorb moisture or does not promote microbial growth. The engineered grading structure media supports high dust-holding capacity and long filter service life. Made in the USA, these filters are ideal for residential, commercial, schools, health care, & industrial filtration applications.

• Exact Size: 19 7/8 x 21 1/2 x 7/8 (19.875 x 21.5 x .875) Inches | Nominal Size: 19 7/8 x 21 1/2 x 1 | Quantity 5
• Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR 5-6 rating. Filters & blocks small particles such as Lint, Dust, Pet Dander, Pollen, Dust Mites, Smog, & Mold.
• Improved MERV 10 Filtration with similar air flow and resistance as a MERV 8 filter. Durable & Long Lasting: Heavy duty frame won't buckle and pleats will not allow microbial growth.
• 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, office, & industrial filtration applications.
• For optimal performance, recommended to change at least every 3 months.