
Selecting the correct SELECT HINGES SL21 Full Surface Hinge involves considering several factors. First, determine the necessary length. Standard lengths include 83", 85", 95", and 120", suitable for nominal door heights; custom lengths are also available. Next, assess the load and frequency requirements based on your door's weight and usage. The SL21 is designed for 1-3/8" to 1-3/4" doors, with options for thicker doors using long barrel nuts. For standard use, the hinge can support doors up to 200 lbs without reinforcement. For heavy-duty applications, the hinge supports up to 200 lb. doors for high-frequency use, up to 400 lb. doors for medium-frequency use, and up to 600 lb. doors for low-frequency use when using Rivnuts in the frame. Also, consider door width compatibility, with a maximum width of 48" in 16-gauge hollow metal or 1/8" aluminum. When ordering, specify the length, finish (Clear or Dark Bronze anodized aluminum), and whether you need standard duty (SD) or heavy duty (HD) to ensure optimal performance.


