PDQ delivers a wide range of standard hinges which are the best option for high-traffic doors, but only if you choose the right duty hinge for the job. Install a PDQ standard duty hinge on a high-traffic, abused or heavy door and you won't enjoy the long-lasting benefits the right hinge can deliver. To select the right hinge, you need to consider both door weight AND frequency of use. First consider frequency, which is simply a measure of how often the door opens and closes, or how much traffic it gets. For example, a storefront door, employee entrance or main entrance to a school or hospital is probably high-frequency. Then combine the frequency with the door's weight. This load or frequency rating will determine whether you need a standard or heavy duty hinge. Standard Duty hinges are for low- or medium-frequency doors up to 200 lb. without frame or door reinforcement.