Have spent a lot of money on buying a new garage door opener and now wanna know if I can save some by installing it by myself. Want to be sure what size motor do I need for electric garage door opener if the door is 132.24 lbs? Is it even possible to do it without help and which tools I`ll need?

Garage door is a metal sectional roll up door in a concrete structure. Floor walls and ceiling are below grade in a concrete Condo building where each unit has their own two car garage opening out to a common area that is open to the street via a common ramp. On cold nights the winds howl...