DerBlue 2-Pack 20x25x5 MERV 13 Furnace Filter for Lennox X6673 HCF20 – Foldable, Easy Install

DerBlue 2-Pack MERV 13 Furnace Filter for Lennox X6673 HCF20

Experience a thoughtful blend of convenience and performance with DerBlue’s foldable, high-efficiency furnace filters. The design takes the guesswork out of replacement, letting you unfold, lock with rivets, and be ready for operation in minutes. When not in use, the compact form tucks away neatly, helping you maintain an orderly utility space.

Foldable design that makes installation simple

• Unfold the panel, lock into shape with rivets, and slide into your filter compartment with minimal effort.
• The collapsible form reduces storage footprint between replacements.
• Note: reassembly guidance is provided in the included instruction images for best results.

Perfect Lennox compatibility and precise sizing

Designed to align with Lennox X6673 (HCF20) models, the filter’s nominal size is 20x25x5 inches, with an actual size of 19-3/4 x 24-3/4 x 4-3/8 inches. This specificity helps maintain consistent airflow and fit inside your furnace or HVAC unit.

MERV 13 filtration and electrostatic media

The MERV 13 rating targets fine particles in the 1.0–3.0 micron range, supporting a cleaner indoor environment. Combined with electrostatic synthetic media, the filter can offer strong dust capture and extended service life under typical usage.

• High-dust environments can benefit from improved capture capacity and longer-lasting efficiency.
• Electrostatic action helps attract and hold particles, reducing the load on your HVAC system.

Real-life use cases

In active homes, the foldable DerBlue filter can simplify seasonal changes and storage in limited spaces. It suits households with pets, small offices, and rooms that accumulate dust quickly.

• Pet-friendly homes may experience less airborne dander between cleanings.
• Compact spaces benefit from easy storage when the filter isn’t installed.

Long-term value and maintenance

Under normal conditions, a single unit can function for approximately 6 to 12 months, offering a practical, cost-conscious approach to ongoing air filtration. A two-pack further supports continuity and reduces replacement frequency.