Payment Methods Accepted

Ordering Information

What payment types are accepted?
OSI accepts all major credit cards (Visa, Mastercard, American Express, Discover) and Paypal through our online store.  OSI also accepts cash and checks in our physical store in Hagerstown, MD.   OSI accepts purchase orders from many businesses, government agencies and schools.  Credit terms are available for business customers by filling out a credit application.  For inquires about credit terms, please contact OSI at 301-797-3120.  

Can I call or fax an order to OSI?
Yes.  OSI also accepts orders via phone and fax. Please call 301-797-3120 to place your order over the phone. If you wish to fax your order, please fax to 301-797-1504.

How do I cancel my order?
To cancel an order, contact OSI at 301-671-2065. Not all orders are cancelable and may be subject to a 50% restocking fee. Canceled order fees will be handled on a case-by-case basis.

Do you collect sales tax?
OSI collects 6% sales tax on all orders shipped to Maryland, West Virginia and Pennsylvania.

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