Model	GT-HM–50	GT-HM–100	GT-HM–200	GT-HM–300	GT-HM–500
Motor	1 HP/ 1440 RPM	1 HP/ 1440 RPM	2 HP/ 1440 RPM	2 HP/ 1440 RPM	3 HP/ 1440 RPM
Drive	Direct Motor	Direct Motor	Direct Motor	Direct Motor	Direct Motor
Blade	Slotted rotor type	Slotted rotor type	Slotted rotor type	Slotted rotor type	Slotted rotor type
Up-down	Through gearbox	Through gearbox	Through gearbox	Through gearbox	Through gearbox
AC Drive	1 HP	1 HP	2 HP	2 HP	3 HP
RPM	0 to 1500 RPM	0 to 1500 RPM	0 to 1500 RPM	0 to 1500 RPM	0 to 1500 RPM