Other types of slot include the restraining bend in back. This is similar to a slot form except it has a longer hole. Its diameter varies from 1-1/2 inches to 38 millimeters. Compared to a channel slot, it has the distinction of being able to be welded to a structural column, which can be beneficial in certain applications. A few notable features are a patented slit in the middle of the restraining bend, which allows for a smoother restraining of the anchor. Typical spacings range from 12 to 16 inches vertically, but can be adjusted for different applications. Main GBOSKY