The Bed Adaptor needs to be mounted on top rails with rectangular or flat side walls. Attachment on rails with cylindrical rails will not be secure, and your Sleepytroll may become damaged.
The Bed Adaptor fits top rails 1cm – 3.7cm thick.
If your bed is not already rockable by hand you would also need to purchase Bed Rocker Feet. Bed Rocker Feet can only be mounted on cribs with wooden feet, not weighing more than 22 kg (excluding bedding and baby).
The Sleepytroll Bed Adaptor comes with an Allan wrench for mounting.