HORMANN model SILENTDRIVE, 8500 residential opener is a 3/4hps belt drive. It is part of the premium series. This garage door opener has an dc motor on 110vac. A battery backup is not available. The remotes are billion code on 315. The rail is style is Solid Channel.
The warranty on the SILENTDRIVE, 8500 garage door opener is Lifetime on the motor and lifetime on the remaining opener parts from HORMANN.
The model SILENTDRIVE, 8500 is still available.