Aerostar 20x25x4 MERV 8 Air Filter, 2 Count, ACTUAL SIZE (19.50 x 24.50 x 3.75) HVAC, Furnace Filter for Allergies, Dust, Pet Dander & Smoke (MPR 1500 / FPR 10) Fits Lennox & Honeywell Devices

Aerostar 20x25x4 MERV 8 filters are comparable to MPR 600 and FPR 5. Designed for superior filtration efficiency, these filters are made with electrostatically charged synthetic material that draws and captures allergens between 0.3 - 1.0 microns. Aerostar filters are a simple and cost effective step towards a healthier home environment. They also improve the efficiency of your HVAC unit and therefore reduce maintenance and utility costs, by removing dirt and reducing strain on the motor. For best results, change the filter every 60 to 90 days but increase frequency to 30 days during peak summer and winter months when your unit is working the hardest. Compatible with furnaces and AC units.

• Nominal size: 20x25x4; Actual size: 19 1/2" x 24 1/2" x 3 3/4"; This MERV 8 filter is comparable with MPR 600 & FPR 5.
• Designed to filter microscopic particles to promote clean and fresh indoor air quality
• Simple to install and a cost-effective step towards a healthier home environment. Replace 3"-5" filters every 3-6 months.
• 100% synthetic electrostatic media for high efficiency with low air flow resistance
• Manufactured by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive