16" x 25" x 4" 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 HE40-16X25X4) is a medium-efficiency air filtration element engineered for commercial, industrial, and institutional HVAC applications. Designed for reliable particulate removal and low resistance to airflow, the Hi-E® 40 combines a rigid, moisture-resistant beverage board frame with 100% synthetic hydrophobic media. Rated at MERV 8 per ASHRAE 52.2, this filter maintains consistent performance in systems requiring balanced efficiency, extended service life, and mechanical durability under demanding operating conditions.

Technical Specifications

• Product Code: HE40-16X25X4
• Manufacturer: Purolator
• Series: Hi-E® 40
• Model: HE40-STD4
• Nominal Size: 16 x 25 x 4 inch
• Actual Dimensions: 15-1/2 inch (Width) x 24-1/2 inch (Height) x 3-3/4 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: 1390 CFM (Cubic Feet per Minute)
• Initial Resistance: 0.20 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 ensures mechanical strength and dimensional stability
  • Mechanically bonded pleated media for consistent airflow and reduced particle bypass
  • Uniform pleat spacing maximizes surface area and dirt-holding capacity
  • Non-corrosive, moisture-resistant construction for use in variable-humidity environments
• Applications:
  • Commercial HVAC and ventilation systems
  • Industrial air handling units
  • Institutional and healthcare environments
  • Prefilter use in multi-stage filtration configurations
• Installation Orientation: Install with airflow arrow aligned to system flow direction
• Compliance: ASHRAE 52.2; UL 900 Classified

Professional Summary

The Purolator Hi-E® 40 MERV 8 Pleated Air Filter provides HVAC professionals with a reliable, medium-efficiency filtration solution engineered for long service life and stable performance. Its hydrophobic synthetic media ensures durability in high-humidity environments, while the reinforced beverage board frame maintains rigidity under system airflow pressures. Offering low initial resistance and efficient particulate removal, the Hi-E® 40 supports optimized airflow, extended maintenance cycles, and consistent operational performance in commercial and industrial filtration systems.