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The KOCH FILTER 13X20X1 is a standard 1-inch disposable air filter sized at 13 x 20 x 1 inches, designed for residential and light commercial HVAC systems requiring routine panel filtration. The disposable construction captures airborne dust, lint, and larger particulates before they reach the blower and heat exchanger. Once loaded, the filter is discarded and replaced rather than cleaned. HVAC technicians and facilities maintenance personnel install these filters during routine service calls or scheduled preventive maintenance intervals to maintain proper system airflow and protect internal components.
This filter fits ducted forced-air systems that use a standard 1-inch filter slot, including gas furnaces, electric air handlers, and packaged units with a 13 x 20 x 1 inch filter bay. It is suited for residential applications and light commercial spaces where basic particulate filtration is the primary requirement. Regular replacement at intervals appropriate to the environment and system runtime keeps static pressure within design limits and supports efficient operation.
Designed as an OEM-style replacement filter for residential and light commercial forced-air HVAC systems that accept a standard 1-inch panel filter in a 13 x 20 x 1 inch nominal slot.
Air filters are replaced by HVAC technicians or qualified maintenance personnel. Always set the thermostat to the off position and confirm the air handler or furnace blower has stopped before opening the filter compartment. Insert the filter with the airflow arrow on the frame pointing toward the blower and away from the return duct. Follow local codes and the equipment manufacturer's recommended replacement intervals based on runtime and site conditions.
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