Is there a maximum length and width that can be installed without floor T molding or transition strip? Installing 37ft x 36ft space.

Hello Joyce and thanks for the inquiry. The maximum square footage allowed in a room before needing to install a transition molding would be 80' x 80' or 6,400 square feet, so it sounds like you should be alright. However, remember to leave a sufficient expansion gap of at least 5/16-inch around the entire perimeter of the room. Thanks again for choosing ProCore Plus, and we wish you all the best with your flooring project.