Stairwell-Pro Walkthrough FrameThe base frames used on the Alto Stairwell Pro Tower.

the ALTO Universal Stair Unit is also available on its own without handrails

The standard short plain platform for MD towers

the ALTO Universal Stair Unit is also available as a set

This version is used in towers with 1

7m long bays

7m single width HD towers

Supplied pre-assembled

The standard 2m frame used on all single width HD towers

An adjustable-height aluminium leg that fits onto the castor wheel and pins into the leg of any MD frame

6m double width MD towers

57m bays with a 2m lift

This is the size of castor that is supplied as standard with Alto MD towers