B-Tech BT8372 Installation Manual & Parts List page 9

OPTIONAL: EXTENDING THE MOUNTING RAIL
Combine Mounting Rails together using the BT8390-EXT
i. On the intended front facing side of the mounting rail (item D1) insert 4 x joining
bars (item F1) half-way into each slot, on the back side insert 1 x joining bar into
the top slot and 1 x joining bar into the third slot (see fig. 1). Loosely fasten the
2 grub screws (item F2) on each joining bar fixing it to the mounting rail.
ii. Slide another mounting rail (item D1) onto the joining bars and tighten all the
grub screws, combining the rails securely.
fig. 1
GRUB
D1
SCREW
JOINING
F1
BACK
BAR
FRONT
F1
D1
F2
Combined Rails
D1
F3
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