Replacement Filters Direct Electrostatic Filter for Home Furnaces - 18 x 20 x 1 (457 mm x 508 mm x 25 mm) - 18" x 20" x 1" nominal trade size (457 x 508 x 25 mm)

Replacement Filters Direct Electrostatic Filter for Home Furnaces – 18 x 20 x 1 (457 mm x 508 mm x 25 mm) – 18″ x 20″ x 1″ nominal trade size (457 x 508 x 25 mm)

SKU:RFD-DEF18201-1

$69.00

Washable electrostatic air filter sized 18 x 20 x 1 for home furnaces. Dimensions measure: 18″ x 20″ x 1″ nominal trade size (457 x 508 x 25 mm).

Product Description

The Replacement Filters Direct Electrostatic Filter for Home Furnaces is a washable air filter designed to capture airborne particles with high efficiency. It provides a reusable filtration solution for improving indoor air quality and furnace performance. Dimensions measure: 18" x 20" x 1" nominal trade size (457 x 508 x 25 mm).

Compatible / Equivalent Filters & Identifiers

Fits most residential HVAC systems requiring an 18 x 20 x 1 inch filter. Suitable for standard furnace and air handler setups that accept this nominal size.

Key Features & Benefits

  • Reusable electrostatic filtration reduces waste and maintenance costs.
  • Easy to wash and reuse for ongoing air quality improvement.
  • Designed to fit common 18 x 20 x 1 inch filter slots.

Specifications

Dimensions: 18" x 20" x 1" nominal trade size (457 x 508 x 25 mm)

Special Instructions

Installation Instructions:
Turn off the HVAC system before replacement. Remove the old filter, insert the Replacement Filters Direct Electrostatic Filter with the arrows pointing in the correct airflow direction, and reassemble the system. Run the system briefly to confirm proper airflow.

Care & Maintenance:
Remove and rinse the filter under cool water. Allow it to air dry completely before reuse. Do not use hot water or cleaners that could degrade the filtration media.

FAQs

What is the proper size for this filter?

Dimensions 18" x 20" x 1" nominal trade size (457 x 508 x 25 mm). This size fits many standard furnace filter slots.

How often should I wash the filter?

Wash it when airflow seems reduced or every 1 to 3 months with typical use. Ensure the filter is completely dry before reinstalling.

Will this filter fit my furnace model?

It fits units requiring 18 x 20 x 1 inch filters and is compatible with most residential systems.

*This is not a OEM product and is not covered under any manufacturer’s warranty. The brand name and logos are the registered trademarks of their respective owners. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility.

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