This Original Lennox Healthy Climate expandable media filter is rated at MERV 10 and removes up to 85% of particles, down to 3 microns. 

This filter must be used with plastic frame.  The plastic frame is NOT included with this filter. 

If you don't have or have accidentally thrown away your plastic frame  - you can purchase a new kit see part # X8304 .

NOTE: Plastic frame gets re-used.  When changing filter - replace media but do not discard plastic frame.

Features:

• Factory Original Healthy Climate product
• 20x25x5
• Actual Size of Assembled Frame- 19-3/4" X 24-3/4" X 4-7/16"
• MERV 10 Efficiency Rating
• Removes up to 85% of particles, down to 3 microns, including pollen, dust and dirt, pet dander, dust mites, mold/fungi
• Space-saving expandable filter
• Expandable media air filter - ships like a collapsed accordion and is expanded into existing frame, which is assembled around the filter
• Easy-to-follow directions printed on side of filter box
• Change filter ever 6-12 months, depending on particles captured

Fits:
Lennox Model HCXF20-10 Healthy Climate Air Cleaner Cabinet
Lennox HC20 Healthy Climate Media Air Cleaner Cabinets - 20x25