Out of Stock
  • Availability: Available for Delivery
  • Category: Replacement Filter Media
  • Warehouse Availability: PLME
  • MERV Rating: 8
  • Size: 24" x 25"
  • Thickness: 1"
Purolator Replacement Filter
Purolator’s innovative Key Pleat® standard and high capacity filters are the best-performing self-supported pleat (SSP) on the market. Using breakthrough technology and processes by Purolator’s R&D team, the Key Pleat achieves a mechanical MERV 8 efficiency, extremely low pressure drop, and industry-leading dust holding capacity. The Key Pleat possesses the most consistent pleat spacing on the market, achieved with innovative media and a fully automated manufacturing process. The direct adhesion between the media and frame resists movement, bunching, and collapsing during use, supporting a consistent low pressure drop, balanced dust loading, and longer service life. The robust durability of the Key Pleat filters will save time and money previously wasted on replacing damaged wire-backed filters. With no metal that can warp or deform, moisture-resistant beverage board frame, and rugged synthetic media, the Key Pleat packs a punch and maintains its structural integrity even in wet or humid conditions.


  • Self-supported media – no metal wire backing!
  • 100% synthetic media resists moisture, mold, and damage
  • High strength and rigidity, resulting in full depth loading and enhanced dust holding capacity
  • Mechanical efficiency produces increased efficiency as media loads


  • Die cut, single-piece beverage board frame
  • Three pleat stabilizer straps on upstream side
  • Seven strap die cut on air leaving side of the filter
  • Integral media pack support grid on downstream side
  • 100% water repellent, high-strength adhesive coats entire interior of frame
  • Over 140 (SC) and 250 (HC) adhesion points between media and frame
  • Boxed pleat tips provide surface area for adhesion

Value-added summary

  • Synthetic media does not support microbial growth
  • Mechanical efficiency
  • No metal, no corrosion
  • Fully incinerable, environmentally friendly disposal
  • Durable and damage resistant construction
  • Die cut adhesion and design engineered for high strength and support
  • Uniform pleat spacing maximizes performance
  • Water and moisture resistant media, frame, and adhesive
  • Proudly made in the USA


  • All standard commercial applications with normal operating environments
  • Low and medium dust-loading industrial applications
  • Final filters for MERV 8 requirements
  • Pre-filters in multi-stage systems
  • Not for use in high temperature applications or applications with very high or turbulent airflow