We are looking at buying a Hi-Lo, but are not use what length will fit into our garage. Is there a general rule of thumb to go by?
Welcome to the forum! Hi-Lo's are measured from rear bumper to the tip of the tongue. A 22' trailer will probably measure an inch or two below 22'. Count on about 8' for the width.
The other issue is height. Check available height carefully. We had this problem and had to do some adapting door opening.