The Trane BAYFLTR201C Filter Rack Kit is an HVAC accessory designed to securely hold and support air filters in compatible Trane heating and cooling systems. It works by providing a dedicated mounting frame that keeps the filter properly positioned, allowing air to pass through the filter before entering the equipment. Commonly used with air handlers, furnaces, and split-system HVAC u... https://www.partshnc.com/bayfltr201c-trane-filter-rack-kit1-2-042-060a