But somebody has to give you the regs.
The issue is with putting a breach in the fire wall between your house and the garage.
When you have this hole...you potentiality can get Carbon monoxide into the home, and if there is a fire you will have another issue.
I hate being the safety police...but just so you know it may also void your homeowners insurance if something should happen.
I have horror stories with insurance companies...and will not work with them anymore. Leaves a bad taste for everyone.
Just make sure the company mentioned does not have this issue and is fire rated.