Description
Lennox Furnace Filters 16x25x1: 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 extended 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 Classified 900: 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 for Lennox Air Filters 16x25x1
| Specifications: | Details: |
|---|---|
| Model Number | HIA101625-1-48J01 (HI Series – Aluminum, Lennox compatible) |
| Replaces OEM Part | Lennox 48J01 |
| Nominal Size | 16″ x 25″ x 1″ |
| Actual Dimensions | 15.5″ x 24.5″ x 0.875″ (+/- 1/8″) |
| Compatible Equipment | Lennox commercial HVAC systems, rooftop units, and economizer sections |
| Frame Material | .030″ thick aluminum alloy |
| Filter Media | Multi-layer aluminum screen wire mesh (5-ply, corrugated criss-cross configuration) |
| Face Grids | 24 gauge welded aluminum |
| Frame Construction | Precision-mitered corners, aluminum pop rivets |
| Drainage | 3 corner drain holes for complete water removal after washing |
| Dust Arrestance Efficiency | 43% average at rated airflow (350 FPM) |
| Dust Holding Capacity | 68 grams per square foot |
| Rated Airflow | 350 fpm face velocity — 972 CFM at 350 fpm (nominal 16″ x 25″, 300–500 fpm range: 833–1389 CFM) |
| Recommended Airflow Range | 300-500 FPM face velocity |
| Initial Pressure Drop | 0.022″ w.g. @ 350 fpm (clean filter, per AMFCO test data) |
| Recommended Final Resistance | 0.50″ w.g. before cleaning |
| Maximum Operating Temperature | 275°F (135°C) continuous |
| Weight | 2.0 lbs (dry) |
| Washability | Repeated cleaning cycles with commercial detergents or industrial dishwashers |
| Service Life | Washable and reusable; life depends on operating conditions |
| Cleaning Interval | 30-90 days (varies by application and loading) |
| Compliance & Certifications | UL Classified 900 |
| Manufacturer | American Metal Filter Company (AMFCO) |
| Country of Origin | Made in USA |
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.

