Based on this rating a 1 2 hp opener be able to lift about 185 pounds and a 3 4 hp opener should be able to lift over 370 pounds.
How much wight garage door.
A standard 25 steel gauge 8 x 7 residential garage door from unique raynor amarr haas.
Garage door weight is determined by size material steel gauge thickness insulation and glass.
Door weight is important when trying to figure out what torsion or extension springs are needed to counterbalance the door.
The average modern steel single car door weighs around 125 pounds while double car doors weigh about 200 pounds.
It should be noted that since the cable loops around a pulley the lifting force of a 210 pound spring is only 105 pounds as seen by the garage door.
Therefore you need a pair of 210 pound springs even though your total door weight is 210 pounds.