Optimize your 17.5 inch Air Handler with our versatile plenum, measuring 17.5 inches in length, 17.5 inches in width, and 36 inches in height, made from robust, high-quality 28-gauge steel. Designed for efficient air management, this plenum is suitable for both return and supply applications, allowing you to pull in, distribute, or remove air effectively. Enhance your HVAC system with this durable and reliable component.