Most doors when they were installed were installed as manual throw up or hand chain operation, this was mainly due to cost and availability before the door industry had started to grow to the stage were at today. I-Fix now have the ability to change most manual doors to electrically operated for both single phase and three phase applications we can then add different control types to these doors to suit your needs. Converting from manual to electric also reduces the risk to a persons health as some doors over time become unbalanced and heavy to use. If you have further questions please contact us today for a free estimate.