That is great advice thank you.It's easier than you might think, but it's also really messy. I strongly recommend building up a contained area inside the room to keep the dust out of the equipment.
Perfect great appreciate the heads up.I did this a few years ago. I hired a concrete cutting company to cut a hole in the block wall. They did a fine job but concrete dust got everywhere, and I mean everywhere.
I recommend taping off the area with plastic sheeting.
Rfreeman thank you for the photos. SSCW is in Arlington not too far from FWWhere are located in DFW? I am in Ft Worth and have some contacts.
I usually put in a steel sleeve, or frame the opening with steel channelDo you guys ever set a lintel above the new opening?