Koch Filter P412035 Pleated Air Filter 20x35x1 in

Product Description

The KOCH FILTER P412035 is a 1-inch-depth pleated air filter sized at 20 x 35 x 1 inches, designed for HVAC systems that require oversized pleated filtration media. The pleated construction expands the available filter surface area compared to standard flat-panel media, which supports improved particulate capture without creating excessive static pressure drop across the air handler or furnace. This filter is a standard service item replaced by HVAC technicians during routine preventive maintenance.

This filter is suited for residential and light commercial HVAC applications where a non-standard 20 x 35 x 1 inch filter slot is present. Oversized filter dimensions like this are common in equipment with larger return-air cabinets or custom-built filter housings. Installers should confirm the actual filter slot dimensions before ordering, as nominal sizing conventions can vary slightly between manufacturers.

Key Features

• Pleated media design increases surface area for enhanced particle capture
• Oversized 20 x 35 x 1 inch nominal dimensions suit non-standard filter slots
• 1-inch depth fits low-profile filter tracks and standard single-slot housings
• Maintains airflow while capturing airborne particulates in HVAC systems

Compatibility

Designed as an OEM-style replacement pleated air filter for residential and light commercial HVAC systems requiring a 20 x 35 x 1 inch nominal filter size.

Installation Notes

Air filters are serviced by HVAC technicians and qualified maintenance personnel. Always shut down the air handler or furnace at the equipment disconnect and thermostat before removing the old filter. Note the airflow direction arrow printed on the filter frame and install the replacement with the arrow pointing toward the blower. Dispose of the used filter in a sealed bag to contain captured particulates.

Technical Specifications

• Filter Width: 20 inches
• Filter Height: 35 inches
• Filter Depth: 1 inch
• Media Type: Pleated

Standard Information

• Brand: KOCH FILTER
• Manufacturer Part Number: P412035