3M Company 705-4 Electrostatic Air Filter 700 Mpr 14x20x1

Product Description

The 3M COMPANY 705-4 is an electrostatic pleated air filter rated at 700 MPR, designed to capture airborne particles in forced-air HVAC systems. Sized at 14 inches by 20 inches by 1 inch and sold in a 4-pack, this filter uses electrostatically charged fibers to attract and hold dust, pollen, lint, and other common household and light-commercial contaminants. It installs in standard 1-inch filter slots in residential and light-commercial air handlers and furnaces. Licensed HVAC technicians and service professionals often stock multi-packs to cover scheduled maintenance calls on common residential equipment.

This filter is suited for residential forced-air systems where a balance between filtration efficiency and airflow restriction is required. The 700 MPR rating positions it as a step up from fiberglass panel filters while maintaining adequate airflow for most standard residential gas furnaces, heat pumps, and central air conditioning systems. The 4-pack format supports seasonal changeout schedules common in residential service agreements.

Key Features

• 700 MPR electrostatic filtration for capture of dust, pollen, and lint
• Sized 14 inches by 20 inches by 1 inch to fit standard residential filter slots
• Sold as a 4-pack for multi-changeout stocking
• Electrostatically charged fiber media enhances particle capture without powered components
• Drop-in replacement form factor requiring no tools for installation

Compatibility

Designed as an OEM-style replacement electrostatic air filter for residential and light-commercial forced-air systems accepting a 14-inch by 20-inch by 1-inch filter.

Installation Notes

Filter installation and changeout on residential HVAC equipment is typically performed by licensed HVAC technicians or knowledgeable service professionals. Set the system thermostat to the off position before removing or installing filters to prevent unfiltered air from passing through the system during service. Confirm airflow direction arrows on the filter frame align with the direction of airflow toward the blower. Filters in this size and MPR range are generally recommended for changeout every 60 to 90 days under normal residential use, though high-dust or high-occupancy environments may require more frequent service.

Technical Specifications

• MPR Rating: 700
• Filter Dimensions: 14 inches x 20 inches x 1 inch
• Package Quantity: 4 per pack
• Unit of Measure: EA
• Weight: 2.73 pounds

Standard Information

• Brand: 3M COMPANY
• Manufacturer Part Number: 705-4