Filterbuy 21x21x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement for Rheem, Ruud, and Protech (Actual Size: 20.63 x 20.63 x 4.38 Inches)
21x21x5 replacement whole house air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 20.63" x 20.63" x 4.38")
MERV 11 synthetic media (comparable with MPR 1000 - 1200 & FPR 7) protects homes from pets, allergies, and more while trapping 95% of dust particles without impacting air flow
High quality construction (made in the USA) features an electrostatically charged design with 8 pleats per foot that captures more harmful particles and lasts 3x longer than fiberglass models (replace every 90 days for best performance)
Easy installation beverage board (recyclable) frames with dual wire backings improve structural integrity and outperform standard cardboard designs by resisting extreme temperatures
Compatible Models: Rheem / Ruud Filter Part Number (PD540018), Protech (540012, 540018, PD540012), Housing Part Numbers (RXFH-E21AM10, RXFH-E21AM13)
Overview
Brand : Filterbuy
Material : Aluminum, Plastic, Polypropylene
Product Dimensions : 20.63"L x 20.63"W x 4.38"Th
MERV Rating : 11.00
Compatible Devices : Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump
