20x25x4-1/2 NaturalAire Optimum Allergen MERV 11 82755.052025 (2 Filters)

This 20″ × 25″ × 4½″ listing (part number 82755.0452025) of the NaturalAire Optimum Allergen pleated air filter delivers MERV 11 filtration and ships as a case of 2 filters. Individually sealed. Every NaturalAire filter ships individually wrapped inside the case — each filter protected from dust, moisture, and shipping damage until you're ready to install it. What MERV 11 captures Fine dust, pollen, pet dander, mold spores, smoke particles, and smaller allergens. MERV 11 is the standard recommendation for households with allergies, asthma, or pets, and is commonly specified for commercial office spaces where indoor air quality is a priority. Confirm your system can handle the slight increase in static pressure compared to MERV 8. Design and construction Media: Extra-depth pleated synthetic media built for extended service life. MERV 11 mechanical filtration. Frame: Moisture-resistant beverage-board with wire-mesh media support and double-wall construction for deeper formats. Max operating temperature: 180°F (82°C) Where it fits Homes with allergy or asthma sensitivity, pet households, and light commercial spaces. The deeper (4″–6″) format gives significantly longer service life than 1″ standard pleated filters — often 6–12 months per filter. Also worth considering Shopping on price? Our house brand PrimeShield Advanced (MERV 11) covers the same efficiency tier across common residential and commercial sizes and is usually the better value. Choose this branded option when your equipment spec sheet or facilities team calls for it specifically. Questions on fit, quantity, or a commercial quote? Need a size that isn't listed, a different pack count, or a quote for a commercial order? Get in touch — we handle facilities and commercial orders daily and can usually match or beat distributor pricing.