SL917ALU is an Aluminium, height-adjustable 3rd tier tier add-on for SL913ALU stands.
The short curved arms have a 10 degree tilt and 25cm usable depth.
Designed to accommodate smaller peripheral items such as lap top computers, drum machines and small mixers.
If the arms are changed sides to curve outwards,small shallow depth controller keyboards will also fit.
The main bracket remains on the stand once fitted,and the two tier arms and fit and remove in seconds.