Lennox 48J01 Filter

The Lennox 48J01 Economizer Filter is a heavy-duty, 16x25x1 washable aluminum mesh filter designed for Lennox Rooftop Units (RTUs) and commercial air handling systems. Engineered as a direct OEM replacement for 48J0101, this semi-permanent filtration solution features 5-ply corrugated aluminum media secured within a rugged, mitered .030" aluminum frame. Unlike disposable cardboard filters, the Lennox 48J01 is built for high-velocity environments, effectively capturing large particulate matter and protecting sensitive internal components like coils and blower motors from debris buildup. With a 25.0" x 16.0" x 1.0" nominal footprint, it ensures a precision fit to prevent air bypass in economizer hoods and intake sections. Its UL 900 Class 2 fire safety rating and 275°F temperature threshold make it an industry standard for demanding HVACR applications. This filter provides excellent static pressure management, maintaining consistent airflow while offering the convenience of a rinse-and-reuse maintenance cycle for technicians.

Key Benefits

• Direct OEM Compatibility: Precision-manufactured to replace Lennox part numbers 48J01 and 48J0101 in various commercial models.
• Washable Mesh Design: Multi-layered aluminum mesh allows for easy cleaning with water or steam, reducing long-term overhead.
• High Durability: The rigid aluminum frame and 5-ply media withstand high-velocity airflow and outdoor exposure.
• System Protection: Minimizes dust loading on primary filters and internal system components, extending the life of the air handler.
• Standard Dimensions: Fits standard 16x25x1 filter tracks commonly found in Lennox economizers and intake hoods.

Common Questions

Is the Lennox 48J01 a direct replacement for 48J0101?
Yes, this is the official OEM replacement for part number 48J0101, meeting the same technical specifications and performance ratings.

How should this aluminum filter be cleaned?
Technicians should flush the mesh with warm water or light steam. For enhanced particle capture, a water-soluble adhesive spray can be applied after drying.

Where is this filter typically installed in an HVAC system?
It is most commonly used as an economizer filter or a pre-filter in the outdoor air intake section of commercial rooftop units.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.