Height adjustable roller, type 21


The 2 wheels’ height-adjustable roller is a heavy duty roller with the same size as heavy duty lift-sliding door rollers. It gives the possibility to make passive leaf a sliding door beside the active lift-sliding door leaf.

Height adjustable roller type 24


The 4 wheels roller is of a special height adjusting structure inside. The max. leaf weight can reach to 170 kg.



The patent roller has two unique features. The cover of the roller can protect the wheels during installation and transportation, which will be removed only when mounting at the site. The brushes at each end of the roller will clean ground rails, ensuring a long lifetime for the roller.

Roller type 26


R26_width 12mm height min. 22mm,adjustable height 6mm_white wheel_stainless steel.