Lennox* Replacement 17x26x4 MERV 11 - 2/Case

OEM Replacement Ducted Air Filters are designed to fit existing air filter housings. OEM Replacements are pre-assembled for easy installation. Close pleats in 5” depth minimize pressure drop and extend filter life. Offered in ASHRAE, MERV 8, MERV 11, & MERV 13 ratings, OEM Replacements can last six months to a year in most home installations.


  • Extends service life of the HVAC unit by decreasing pressure drop
  • Pleated design increases system’s energy efficiency and reduces overall expense
  • Provides the same MERV 8, 11 or 13 efficiency as other pleated products
  • Can last up to three to six times longer than standard one inch pleated filters
  • Moisture resistant
  • Does not promote microbial growth
  • Protects expensive HVAC equipment from effects of dirty air
  • Synthetic electrostatic charged media


  • Replacement for Lennox part # 75X74, X6664 and X6666
  • Fits Lennox model # PCO-12C and HCFPCO12-10
  • Nominal size 17" x 26" x 4" (Actual size 16 5/8" x 26 3/4" x 4")
  • Filter Media - 100 % synthetic gradient media
  • Filter Support Grid – 30 gauge galvanized expanded metal grid
  • Frame –moisture resistant 28 point beverage board
  • Assembly Technique – Media pack totally bound to frame
  • Max Temperature – 108 degrees Fahrenheit continuous service, Peaks 225 degrees Fahrenheit 


*Trade names and company names are used for identification purposes only. 

SKU: 0215-DPFL17X26X4M11
Lennox 17x26x4, OEM, 75X74, X6664, X6666, PCO-12C, HCFPCO12-10