Gaithersburg, MD 20879 Directions 800.355.1107 P 800.663.8518 F sales@instanthardwaredelivery.com Welcome to IHD, the Mid-Atlantic's premier master distributor of commercial door hardware. Here you'll find information and links to help you select and find the right door hardware solution for your...
Our efforts are primarily directed to distributors, electrical contractors, engineering specifiers and electrical inspectors to educate and influence the sale of our products in the market place. Our History DDK Sales is a third generation family business. It was formed in 2001 as a merger of two...