Purolator® Hi-E® 40 medium-efficiency pleated air filters are designed for long life and high performance in demanding HVAC and process air applications. Purolator uses sophisticated production control techniques to ensure consistent pleat count, height, shape, and spacing. This uniform spacing contributes to a better-performing pleat with low pressure drop and full depth dust loading.

The filter design utilizes double-wall thickness around the outer edge and integral die-cut cross members, which provides strength and rigidity and prevents delaminating, excessive buckling, collapsing, racking, warping, and bending. Additionally, the galvanized steel metal grid resists rust, maintains pleat shape, and prevents fluttering for performance in even the harshest environments.

The frame is bonded with the media pack using high-strength, 100% water-repellent adhesive and provides 50% more contact points between the media pack and the frame. The 4-inch models also use die-cut finger separators to stabilize each pleat.
Filter media is made from 100% synthetic fibers and achieves a mechanical efficiency rating of MERV 8 before and after a conditioning step. The filters can be utilized in virtually any air handling application, including as a final filter or as a pre-filter in multi-stage systems.

Markets:
Commercial and Industrial HVAC
Process Air Filtration

Applications:
Air handling systems
Rooftop units
Side access housings
Built-up filter banks
Pre-filters in multi-stage systems

Benefits
Resistant to moisture and microbial growth
Extremely low pressure drop and high dust-holding capacity
Pleats hold together even when wet, preventing delaminating, excessive buckling, collapsing, racking, warping, and bending
Available in a wide range of air flow rates and sizes to meet the unique requirements of customers’ systems
Low initial resistance contributes to energy savings
Performs to MERV 8 per ASHRAE 52.2-2007 before and after filter conditioning

Features
Mechanical efficiency: MERV 8
Nominal thickness (in.): 1, 2, 4, 6
Rated air velocity (fpm): 300–625
Air flow rates (cfm): 210–3,640
Initial resistances (in.w.g.): 0.16–0.21
Final resistance (in.w.g.): 1.0
Maximum operating temperatures: 225 °F (107 °C)
Material of construction: heavy-duty, moisture-resistant beverage board frame

Hi-E 40® - Standard Size Pleated Filters