317659-403 | Filter 20x21.5x1 | Carrier brasscraft * **Durable construction:** Built with

* **Durable construction:** Built with robust materials to withstand demanding commercial environments

The coil's compact size and lightweight design make it easy to integrate into existing systems

lowering operating costs over the long run

and provides early detection of potential issues within the system

317659-403 | Filter 20x21.5x1 | Carrier brasscraft * **Durable construction:** Built withCarrier Filter 317659 403: Enhance Air Quality and Equipment Performance The Carrier Filter 317659 403 is a vital component for maintaining optimal air quality and protecting HVAC equipment in industrial and commercial settings. This filter, designed for dimensions 20x21. 5x1, is engineered to effectively capture airborne contaminants, ensuring a clean and healthy environment for employees and sensitive equipment. Its construction ensures long lasting