The rectangular EzySlide dampers have the mounting plate and actuator mounted on either the side or bottom of the damper. If the mounting plate and actuator is on the longer dimension the damper is referred to as a bottom-mount damper. If the mounting plate and actuator is on the shorter dimension the damper is referred to as a side-mount damper.
Bottom mount
Arzel Damper, Series: EzySlide, 8 in H x 10 in W, Rectangle