EFFECTIVE IMMEDIATELY! Due to the unprecedented high demand of our products and call volume caused by the recent Coronavirus outbreak (COVID-19), all sales are final. ALL prices subject to change without notice. Returns of the product, in any condition, will not be accepted. Continue to check our websites daily as they are updated after 4pm Monday-Friday with the most up to date available products. Please expect shipping delays due to supplier shutdowns and limited staff. Orders are being shipped out as soon as possible and available products may ship separately. For respirator technical questions, please contact North/Honeywell (800-873-5242) or 3M (800-243-4630).