Here for sale is a pair of Blum HF lift up bi-fold door mechanisms with matching telescopic arms. 

1x set for one bi-fold lift cabinet door.

Mechanism: HF 20F220X (Left and Right hand sides)
Telescopic arms: HF 20F3200 - 1x pair of arms.

Never installed. 

Personal pick up only from Wyoming, NSW. Personal delivery to Sydney Metro and Hunter regions available from $40.

Worldwide postage at cost plus handling charge