BenQ 9H.F6GPK.NA4 Installation Handbook page 24

4. After the displays are mounted and
fastened, check if the space between each
display is just enough for removing the gap
inspection pad smoothly. If the pad is
trapped, adjust the screws to release
more space.
24 Video wall installation guide
5. Insert the pad again and swipe the pad
horizontally and vertically between the gap
to ensure it can move smoothly. Ignore
the black tapes on the edge if they stop
you. Refer to Recommended gap between
displays on page 23
distance required for each model.
for the minimum