Lennox X6667 - 21" x 26" x 4" Healthy Climate Air Filter for PCO-20C, MERV 11

The genuine OEM Lennox X6667 MERV 11 21x26x4 Air Filter is designed for use in the Lennox HCFPCO20-10 and Lennox PCO-20C PureAir air cleaners.

Lennox X6667 Specifications:

• Nominal Size: 21" x 26" x 4"
• Actual Size: 20-3/4" (20.75") x 25-3/4" (25.75") x 3-3/4" (3.75")
• MERV Rating: 11
• Filter Life: 6 months for air conditioning and heating use and 12 months for heating use only

Lennox X6667 Pleated Media Filter Compatible Model/Part Numbers:

• X6667, X666701
• HCFPCO20-10, PCO-20C, PCO-20P, PCO-20U
• 75X67

Lennox 17" x 26" x 4" Pleated AC & Furnace Filter is also known as:

• Lennox X6667 Filter 21x26x4 MERV 10.
• Lennox X6667 OEM Media Filter fits Model PCO-20C MERV 10.
• Lennox X6667 MERV 10 Replacement Filter 21” x 26” x 4”.
• Lennox Healthy Climate MERV 11 Filter X6667.