The Provox XtraFlow HME Heat and Moisture Exchanger with Filter-Trach 7291 30 Ct is a solid unit designed for use in healthcare applications. With a manufacturer warranty and 30 units in the pack, this heat and moisture exchanger is ideal for providing patients with the necessary care. The product is manufactured by Provox XtraFlow HME and comes with a filter-trach system, making it a reliable and effective tool for enhancing patient comfort and well-being. Contact customer service for more information on the product's expiration date.