NB size refers to the external diameter of the metal roller tube
brackets which you can top or face fit.
Comes with either a never ending chain.
The chain length lengths are from 500mm drop to a 3m drop.
You will get a free safety device with each roller kit, which must be used.
Made in The U.K.
All continuous chains must be secured using a chain tensioning device which must be fixed to a wall at least 1.5m above the floor.
To calculate maximum allowable chain length to comply with new safety regulations:
Max drop of chain = (Height of rail from floor in cm - 150cm)
MUST BE FITTED WITH A SAFETY DEVICE