The hinges are one of the most active components of any opening combined with the lock, exit device and closer. Hardware in general is not thought of unless it does not work properly, and the door unit will not function properly if the proper hanging device is not specified. So, how do we determine The hinges are one of the most active components of any opening combined with the lock, exit device and closer. Hardware in general is not thought of unless it does not work properly, and the door unit will not function properly if the proper hanging device is not specified.

BS EN 1935 classifies door furniture door furniture by using an 8 digit coding system. A similar classification applies to all building hardware product standards so that complementry items of hardware can be specified to, for instance, a common level of corrosion resistace, category, category of use, etc. each digit refers to a particular feature of the product measured against the standard's performance requirements.

The appropriate specification and correct selection of hinges is crucial to their performance and depends on the following factors; 1. Is it a fire, smoke or emergency escape door? 2. How heavy is the door and what are the door dimension (height, width and thickness)? 3. What is the door's construction and are there any unusal features that could affect the hinges? 4. Where is the door situated e.g internal or external; is it near the coast or in a swiming pool? 5. What level of use/abuse will the door be subject to e.g office, hospital or school corridor? 6. What other items of hardware are to be fitted, that may be affect the hinge performance, typically door closer or door stops? 7. Any other unusal features involved e.g. door has radius top or the door is a bifold.