Installation of my Chamberlain B2401 Garage Door Opener.
Chamberlain B2401 opener: https://amzn.to/3PJxvpV
Chamberlain B4603T opener: https://amzn.to/3PJTgpA
Door Reinforcement: https://amzn.to/4czvUgn
8' Extension: https://amzn.to/3vBqmRR
White Lithium Grease: https://amzn.to/3PHAK1e