20" x 25" x 2" Replacement Air Filter, Pleated, Merv 8

Purolator Hi-E® 40 Pleated Air Filter – Technical Product Information

The Purolator Hi-E® 40 Series Pleated Air Filter (Model HE40-20X25X2) is a medium-efficiency filtration component designed for commercial and industrial HVAC systems requiring dependable particulate removal and consistent pressure drop performance. Constructed with a durable beverage board frame and 100% hydrophobic synthetic media, the Hi-E® 40 maintains structural rigidity and filtration efficiency under high airflow, variable humidity, and elevated temperature conditions. Rated at MERV 8 per ASHRAE 52.2, this filter is suitable for both primary filtration and use as a prefilter in multi-stage air handling applications.

Technical Specifications

• Product Code: HE40-20X25X2
• Manufacturer: Purolator
• Series: Hi-E® 40
• Model: HE40-STD2
• Nominal Size: 20 x 25 x 2 inch
• Actual Dimensions: 19-1/2 inch (Width) x 24-1/2 inch (Height) x 1-3/4 inch (Depth)
• Available Depths: 1", 2", and 4"
• Media Type: 100% Synthetic, Un-dyed, Hydrophobic
• Media Color: White
• Frame Material: Moisture-Resistant Beverage Board
• Performance Rating: MERV 8 (per ASHRAE 52.2)
• Airflow Capacity: 1735 CFM (Cubic Feet per Minute)
• Initial Resistance: 0.29 in. wg @ rated airflow
• Final Recommended Resistance: 1.0 in. wg
• Average Dust Spot Efficiency: 35–40%
• Average Arrestance: Approximately 95%
• Maximum Operating Temperature: 225°F (107°C)
• Construction Features:
  • Rigid die-cut beverage board frame for dimensional stability
  • Mechanically bonded pleated media to ensure uniform airflow and prevent media separation
  • Optimized pleat spacing for improved dust-holding capacity and reduced pressure drop
  • Non-corrosive materials suitable for humid, variable-temperature, and continuous-duty installations
• Applications:
  • Commercial and industrial HVAC systems
  • Air handling units and rooftop equipment
  • Institutional and healthcare facilities
  • Prefilter use in high-efficiency or HEPA filtration systems
• Installation Orientation: Install with airflow arrow aligned in the direction of system air movement
• Compliance: ASHRAE 52.2 and UL 900 Classified

Professional Summary

The Purolator Hi-E® 40 MERV 8 Pleated Air Filter provides HVAC professionals with a reliable, medium-efficiency filtration option engineered for demanding commercial and industrial environments. Its hydrophobic synthetic media delivers stable particulate removal performance and resistance to moisture absorption, while the reinforced beverage board frame ensures mechanical stability during installation and operation. Designed for long service intervals and consistent airflow, the Hi-E® 40 supports efficient air handling performance and predictable resistance characteristics across a range of system conditions.