Manufacturer page.

Ives offers a variety of architectural hinges, also known as butt hinges, that will cover any need in residential and commercial applications while also exceeding code requirements. It is important to consider the door width, thickness, weight and clearance when choosing a hinge. With tested durability and consistent superior performance, Ives architectural hinges get the job done. The products covered in the EPD include steel hinges with height ranging from 3.5 inch to inch. Within this product category, there are a few concealed bearing hinges that include a polyethylene component (0.2% of total weight of product). However, we have taken the approach to present results for the lightest and heaviest products in the Ives Architectural Hinge product line. Moreover, impacts from steel far exceed that of plastics such as polyethylene in this case. Results presented in the following sections represent worst case scenario in terms of impacts.