Installation Instructions

11
Fitting the lower support frame
without using an extension
1 Ensure that the lower support frame is in the
correct position.
Note: Position the open side of the lower support
frame opposite the open side of the upper support
frame.
2 Slide the lower support frame into the upper
support frame and use 16 screws to secure it at the
established total height.
Notes
‒ Select the mounting holes in such a way that a
maximum clearance is achieved between the
screws. The purpose of this is to ensure stability.
‒ Leave open at least one mounting hole between the
screws.
Fitting the lower support frame using
an extension
1 Slide each part of the extension over the outside of
the upper support frame and use 16 screws to fit
them to the upper support frame..
2 Ensure that the lower support frame is in the
correct position.
Note: Position the open side of the lower support
frame opposite the open side of the upper support
frame.