Custom Size PREpleat MERV 11 Standard Capacity Filters (12 Filters)

Using the dropdowns below select the exact size you would like us to have your filters made, length x width.

Sale price$ 205.00

Standard filter depth will be 1" (actual size 3/4"). If 2" depth (actual size 1-5/8") is needed select the checkbox.

Price is based on size of custom filters and will update automatically.

Learn more about measuring your filter with this help article.


This filter is custom made to your exact size giving you a perfect fit to ensure no dirty air is bypassing your system.

The PREpleat M11 SC pleated panel filter enables a significant upgrade in collection efficiency over existing MERV 8 products. A 25–30% average efficiency filter can be upgraded to 60–65% efficiency at roughly the same resistance levels, when this filter is utilized.

Superior Design and Construction

Media: Progressive density bi-component fibers. Airflow Resistance on 24" x 24" x 2": 0.34" w.g. @ 2000 CFM (500 FPM).

Media Support: Diamond-shaped expanded metal. Pleat Design: V-Pleat design aids in pressure drop while reducing energy cost. Design allows for maximum airflow and Dust Holding Capacity (DHC) during the life of the filter.

Frame: Moisture-resistant clay coated frame.

Bi-Component Media: Ultra-high performance bi-component synthetic media contains electrostatically engineered trilobal fibers within homogenous domains of positive and negative Electret charges. These Electret charges in the bi-component fibers contribute to an ultra-high performance product.

Enhanced Fibers: Electrostatically enhanced fibers are precisely structured into a progressive density gradient structure to enhance airflow throughput with less resistance while providing high DHC and ultra-high efficiency during operational life.

Gradient Media Structure: Proprietary gradient media structure enables larger incoming contaminants to be trapped in the prefilter layer, thus allowing the highly charged secondary layer to attract and hold smaller particulate. This increases the life of more expensive final filters downstream.

High Efficiency at Low Pressure Drop: This proprietary media, combined with AAF Flanders unique V-Pleat manufacturing design, equals the highest performance pleat available on the market today.


PREpleat M11 SC filters are designed for general air filtration in all types of cooling, heating, and ventilating systems. They can be used as prefilters to extend the life of higher efficiency filters or on their own. They are suitable for installation in front access holding frames and side access housings. These filters are excellent for upgrading from disposable panel filters, permanent filters, or media pads in metal frames where a higher level of cleaning is desired.

Filter Overview

  • 2x-3x higher efficiency on small particles than standard MERV 8 pleated filters
  • Increases life of downstream filters
  • Significantly improved protection against bioaerosols and other hazardous particles
  • Reinforced with corrosion-resistant heavy metal backing
  • 2-piece die cut double-wall frame with diagonal face strips for extra strength
  • Quantity: 12 Filters
  • MERV 11 Rating
  • Quantity: 12 Filters
  • 1" and 2" depth available: 1" nominal = 3/4" actual size, 2" nominal = 1-5/8" actual size.
  • Starting at $205 per case ($17.08 per filter) with Free Shipping - Pricing is based on filter size

Download Full Brochure

Ordering Custom Filters

Select the length and width in the exact filter size needed with the dropdown menu options. Here is an example of how your size should be entered: 19-3/8 x 21-1/8 x 1

Fraction to decimal chart:

  • 1/8 = .125
  • 1/4 = .25
  • 3/8 = .375
  • 1/2 = .5
  • 5/8 = .625
  • 3/4 = .75
  • 7/8 = .875
Filter Chart Measure Ruler

Filter Fit Guarantee™

Custom Size Filter Disclaimer