20X25X4 MERV 10 PLEATED FILTER

This is a 4-inch thick pleated HVAC air filter used in residential and light commercial furnace or air handler systems.

What it is

• Size: 20" x 25" x 4" (nominal)
• Efficiency: MERV 10
• Type: deep-pleat (4-inch media) furnace filter
• Installation: slides into a 4-inch filter cabinet or media box

What it does

• Filters air entering your HVAC system
• Captures:
  • Dust and dirt
  • Pollen
  • Pet dander
  • Mold spores
  • Fine airborne debris
• Helps protect blower motors, coils, and ductwork

Why 4-inch filters matter

Compared to 1-inch filters:

• Much larger surface area
• Longer service life (often 3–6 months or more)
• Better airflow with less restriction
• Higher dust-holding capacity

Key features

• MERV 10 = medium-efficiency filtration
• Pleated media = improved particle capture vs fiberglass filters
• Designed for media cabinets (not standard 1-inch slots)
• Better overall HVAC protection than thinner filters

Common applications

• Residential HVAC systems with media filter cabinets
• High-efficiency furnaces and air handlers
• Homes with pets or moderate allergy concerns
• Light commercial buildings