Lennox X6667 21x26x4 MERV 11 Air Filter

The genuine OEM Lennox X6667 MERV 11 21x26x4 Air Filteris designed for use in the Lennox HCFPCO20-10and Lennox PCO-20CPureAir 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.