20" x 25" x 4" Replacement Air Filter, Pleated, Merv 8

The Purolator HE40-20X25X4 Hi-E 40 Pleated Air Filter is a high-efficiency filtration component engineered for professional HVAC, industrial, and commercial air handling systems. Designed for consistent particulate removal and low airflow resistance, this MERV 8-rated filter provides reliable performance in demanding air quality control environments. Its rigid construction, extended surface area, and high dust-holding capacity make it suitable for applications requiring continuous airflow and minimal maintenance intervals.

Details

• Model Number: HE40-20X25X4
• Manufacturer: Purolator
• Product Type: Hi-E 40 Pleated Air Filter
• Part Number: 1822292
• Nominal Size: 20 inch x 25 inch x 4 inch
• Actual Size: 19-1/2 inch (W) x 24-1/2 inch (H) x 3-3/4 inch (D)
• Media Type: Synthetic pleated filter media
• Frame Material: Heavy-duty moisture-resistant beverage board
• MERV Rating: MERV 8 (per ASHRAE 52.2)
• Temperature Rating: 225 °F (107 °C) maximum continuous operation
• Airflow Resistance: Low initial pressure drop with stable resistance over service life
• Reinforcement: Expanded metal grid backing for media support and rigidity
• Construction: Mechanically bonded pleated media ensuring dimensional stability and high dust-holding capacity
• Application: Commercial, industrial, and institutional HVAC systems requiring medium-efficiency particulate control
• Compliance: Meets UL 900 Class 2 flammability and ASHRAE filtration performance standards

Professional Specifications

The Purolator HE40-20X25X4 pleated air filter is engineered with high-performance synthetic media designed for MERV 8 efficiency. Its pleated configuration increases surface area for extended filter life and optimized airflow management. The expanded metal support grid maintains uniform pleat spacing, preventing collapse under high velocity or pressure differentials. The heavy-duty moisture-resistant frame ensures rigidity and dimensional stability even in variable humidity or elevated temperature conditions. Rated for continuous operation up to 225 °F, this filter is suitable for air handlers, rooftop units, and central HVAC systems where consistent air cleanliness and system protection are required.

Summary

The Purolator HE40-20X25X4 Hi-E 40 Pleated Air Filter delivers MERV 8 efficiency with durable construction and low pressure drop for professional HVAC and air handling applications. Its rigid, moisture-resistant frame and synthetic pleated media provide stable, long-term filtration performance in commercial and industrial environments.