GUARDIAN model 728 residential opener is a 3/4hps belt drive. It is part of the pro series. This garage door opener has an dc motor on 110vac. A battery backup is included. The remotes are billion code on 303. The rail is style is Solid T.
The warranty on the 728 garage door opener is 5 years on the motor and 1 year on the remaining opener parts from GUARDIAN.
The model 728 is discontinued.