Please see Ordering Information for additional topics relating to shipping, international orders, and purchase orders.
Tax Exempt Orders
For tax exempt orders within
Virginia, Maryland, and New York, please place your credit card order with
Customer Service by calling (800) 235-7566. You may also email your order, with
credit card information or an official purchase order, to [email protected], or fax it to
(703) 476-2970. Include a copy of your tax exempt certificate if not previously
To make changes to your order: