Hollow Metal Frames

Screen Shot 2016-08-30 at 2.59.58 PMFrames Twisted or Set Out of Square

If you need installation or trouble shooting information The Steel Door Institute has you covered.

They have many instructional videos that would be great to pass along to your team or your contractors and customers.




IMG_0180When To Use a 4″ Head

We run into this application most when dealing with masonry block walls. The use of the 4” head is all about the lintel.

A lintel is a horizontal architectural member supporting the weight above an opening, such as a window or a door.

The lintel ensures that the weight of the blocks above the opening do not rest on the frame header.  This would eventually lead to…



IMG_0208Floating Frame

The picture to the left shows the frame floating above the ground.  The mason told me that this was the result of the block being laid prior to the foundation being poured.

This way the work needing to be completed before the foundation, such as plumbing, wouldn’t hold up the overall progress of the project.

Happy to see they used a masonry lintel for support!



IMG_0619What is a Kerf Frame?

According to Merriam-Webster a kerf is a slit or notch made by a saw blade or cutting torch.

In hollow metal a kerf is a notch in the frame which serves as a channel to insert weatherstripping. The weatherstripping becomes an integral part of the jamb profile.  The purpose of a kerf frame is to reduce air flow and water infiltration increasing energy efficiency.


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