3M Company 703-4 Electrostatic Air Filter 700 Mpr 20x25x1

Product Description

The 3M COMPANY 703-4 is an electrostatic pleated air filter rated at 700 MPR, sized 20 inches by 25 inches by 1 inch, and sold in a 4-pack unit of measure. It is designed for use in residential forced-air HVAC systems where the filter slot accepts a standard 1-inch media filter. The electrostatic charge in the filter media helps capture airborne particles including dust, pollen, and lint as air passes through the HVAC blower system. HVAC technicians and knowledgeable homeowners install this filter as part of routine preventive maintenance to maintain system airflow and indoor air quality.

This filter fits residential gas furnaces, heat pumps, and central air conditioning systems equipped with a standard 1-inch return-air filter slot measuring 20 by 25 inches. It is suited for light-to-moderate particle loading environments such as single-family homes and small multi-family units. The 4-pack format allows installers or service contractors to stock multiple replacements for scheduled filter change intervals, reducing return trips for routine maintenance calls.

Key Features

• 700 MPR electrostatic media captures dust, pollen, and lint
• Standard 1-inch depth fits most residential 20x25x1 filter slots
• Sold as a 4-pack for stocking and scheduled replacement programs
• Drop-in replacement requiring no tools or modifications

Compatibility

Designed as an OEM-style replacement electrostatic air filter for residential forced-air HVAC systems accepting a 20 inch by 25 inch by 1 inch filter.

Installation Notes

Installation is performed by a licensed HVAC technician or qualified service professional. Set the system thermostat to off before removing the existing filter to prevent unfiltered air from passing through the blower. Insert the new filter with the airflow arrow on the frame pointing toward the blower and away from the return-air duct. Dispose of the used filter in accordance with local waste guidelines.

Technical Specifications

• MPR Rating: 700
• Filter Dimensions: 20 inches x 25 inches x 1 inch
• Package Quantity: 4 per package
• Weight: 4.59 pounds

Standard Information

• Brand: 3M COMPANY
• Manufacturer Part Number: 703-4