Apex Doors, LLC

Hollow Metal Frames:   http://www.apexdoors.net/

 

This image shows the correct way to install a welded hollow metal frame. Many installers use the welded on spreader bar to hold the opening width but that spreader bar even though it is close to the opening width is just for shipping purposes and you really need to use a Jig similar to the wooden one in the picture for 100% accuracy. Hollow Metal Frame Installation is the backbone to all material such as hinges, doors, closers, latch sets to work at optimum efficiency which makes your $$$$$ go farther.