Description

Nordic Pure 20x25x5LXREDM13-1 Lennox X6673/X6675 Replacement MERV 13 Air Filter 1 Pack – 20x25x5 is a high-efficiency HVAC filter designed for premium air purification and system protection. Engineered to replace Lennox X6673 and X6675 models, this filter delivers MERV 13 level performance, capturing allergens, bacteria, dust, and even virus-carrying particles. It’s the ideal solution for households that demand cleaner air due to allergies, asthma, pets, or frequent home improvements.

Features:

MERV 13 rating captures fine particles like pollen, pet dander, mold spores, and bacteria
Direct replacement for Lennox X6673 and X6675 models
Constructed with durable, moisture-resistant beverage board frame
Reinforced metal mesh backing adds structural stability
Engineered for optimal airflow while maintaining high filtration efficiency

Benefits:

Improves indoor air quality by removing airborne contaminants
Reduces allergens and respiratory irritants for healthier living spaces
Helps HVAC systems run more efficiently, lowering energy bills
Ideal for allergy season, pet-heavy households, or renovation periods
Minimizes maintenance and prolongs equipment life

Technical Specifications:

Model: 20x25x5LXREDM13-1
Nominal Size: 20″ x 25″ x 5″
Actual Size: Approximately 19.75″ x 24.75″ x 4.38″
MERV Rating: MERV 13
Filter Type: Pleated Electrostatic
Quantity: 1 filter per pack

Important Note: Almost ALL furnace filters have a different “actual size” than the nominal size printed on the air filter. It’s best if you measure your air filter for the EXACT size and compare it to our “Actual Size”. With the 4″ and 5″ air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7/8 and 5 1/4 inch depth filters, so please compare exact dimensions. Nordic Pure Lennox Replacement MERV 13 filters are considered the traditional 5” depth at an actual 4 3/8”. Always confirm your existing filter or housing dimensions before ordering.