Terry Richardson, MD of TWR Trade Frames and TWR bi-folds, is the original Bi-fold Doctor - answering a series of technical questions related to bi-folding doors for a leading trade magazine.

Below you can read some of the columns. Packed full of information and a great resource for anybody looking for more bi-fold related information, Terry would be personally happy to answer any questions you may have.

Terry Richardson, MD of TWR Trade Frames and TWR bi-folds, is the original Bi-fold Doctor - answering a series of technical questions related to bi-folding doors for a leading trade magazine.