Description
Product Overview
The HIA101625-1-48J01 is an industrial-strength, washable aluminum mesh filter engineered as a direct replacement for the LENNOX 48J01. This permanent 16x25x1 filter is specifically designed for high-velocity Lennox rooftop units (RTUs) and commercial air handling systems. Featuring a 5-ply corrugated aluminum mesh media pack, it provides effective pre-filtration, capturing large particulate matter and protecting internal system components from debris buildup while maintaining optimal static pressure.
OEM Direct Compatibility: This filter is precision-manufactured to match the exact specifications of the Lennox factory 48J01 part. With precise dimensions of 15.5″ x 24.5″ x 0.875″, it ensures an airtight fit in all compatible Lennox equipment, eliminating the risk of bypass air that can damage motors and coils. For technical support and detailed system information, visit the Lennox Commercial HVAC Official Site.
Key Benefits
- Washable & Permanent: Designed for 5-10 years of continuous service—simply wash and return to service, eliminating disposable filter waste.
- Lennox 48J01 Match: 100% compatible specification for Lennox commercial filtration requirements.
- Extruded Aluminum Frame: Heavy-duty .030″ aluminum alloy frame with mitered corners and aluminum rivets for extreme durability.
- High Dust Loading: 5-ply corrugated mesh captures up to 65g of dust per square foot before requiring maintenance.
- UL 900 Class 1: Meets strict industrial fire safety standards for continuous operation up to 275°F (135°C).
- Energy Efficiency: Low initial resistance ensures maximum airflow, reducing load on blower motors and lowering energy consumption.
Technical Specifications
| Characteristic | Measurement / Detail |
|---|---|
| Nominal Size | 16″ x 25″ x 1″ |
| Actual Dimensions | 15.5″ x 24.5″ x 0.875″ |
| Part Number Replace | Lennox 48J01 |
| Media Type | 5-Ply Corrugated Aluminum Mesh Pack |
| Frame Material | .030 extruded aluminum alloy |
| Arrestance Efficiency | 43% (Average) |
| Dust Holding Capacity | 68 grams per square foot |
| Temperature Rating | 275°F (Continuous) |
| Safety Rating | UL 900 Class 1 |
| Weight | 3.0 lbs |
Industrial & Heavy Commercial Applications
The Lennox 48J01 compatible filter is widely utilized in large-scale commercial facilities, including retail centers, offices, and educational institutions. Its rugged construction is optimized for rooftop intake environments where it must endure exposure to the elements while protecting the building’s primary air filtration system. As a permanent solution, it provides a significant reduction in the Total Cost of Ownership (TCO) by removing the ongoing logistics and costs of purchasing, storing, and disposing of thousands of cardboard-frame filters.
Maintenance Guide
For optimal results, inspect and clean the filter every 30 to 45 days. Use a standard water hose to flush debris from the downstream side. For heavy accumulation, use a mild, non-acidic detergent. The filter includes multiple corner drain holes to facilitate quick drying, allowing maintenance teams to return systems to peak efficiency with minimal delay.
Frequently Asked Questions
Yes. This filter is manufactured to the exact 15.5″ x 24.5″ x 0.875″ dimensions and high-velocity performance standards of the 48J01 OEM part.
Yes, the industrial-grade aluminum mesh can withstand standard pressure washing (up to 1500 PSI recommended) for heavy-duty cleaning.



