AAF Flanders PrePleat M11 Panel Filter – 15″ x 20″ x 1″, MERV 11 Standard Capacity (12 Filters)

Description

Warehouse deal: closeout pricing on overstock inventory. Filters may show minor box wear or cosmetic imperfections from handling and storage. Each lot is inspected before listing and priced accordingly — filtration performance is unaffected. While supplies last.

This 15″ × 20″ × 1″ listing (part number nan) of the AAF Flanders PREpleat M11 pleated air filter delivers MERV 11 filtration in the Standard Capacity configuration and ships as a case of 12 filters.

The PREpleat M11 is a meaningful efficiency upgrade over standard MERV 8 filters — capturing roughly 60–65% of particles in the 1–3 micron range versus the 20–30% typical of MERV 8 — at roughly the same airflow resistance.

What Standard Capacity means

The SC (Standard Capacity) configuration is the everyday workhorse of the PREpleat M11 line: MERV 11 filtration with lower initial resistance than the High Capacity variant. For most homes and light commercial spaces, SC balances filter cost, airflow, and dust-holding capacity.

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: Progressive-density bi-component synthetic fibers. Mechanical capture — performance does not fade as the filter ages.
• Frame: Moisture-resistant beverage-board with diagonal support members and diamond-shaped expanded-metal media support bonded to the downstream side.
• Max operating temperature: 180°F (82°C)

Where it fits

Commercial and residential HVAC where MERV 11 filtration is specified. Drop-in replacement for front-access holding frames and side-access housings.

Replacement schedule

At 1″ depth, plan to replace this filter every 60–90 days under typical residential or light commercial loading. High-dust environments, pet homes, wildfire smoke events, or construction-adjacent sites will shorten that window. Check the filter monthly through the first cycle to calibrate your schedule.

Spec sheet

Download PREpleat M11 spec sheet (PDF)

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.

Explore more from our collection.