U.S. Sunlight 2014ST Skylight Tube - Manual (Page 5)

Step 10 - Trim off excess tube material and secure with foil tape
Once the retaining band is secure, trim off the excess material with a utility knife at the edge of the diffuser housing, and cut the
wire with tin snips or wire cutters. (fig. 45) (fig. 46) Fold in the extra material over the retaining band and make sure to push it
up beyond the indent on the inner edge of the housing so that the diffuser assembly will fit properly. (fig. 47) Use the included
aluminium tape to secure the extra material to the edges. Try to tape it down as smooth as possible. (fig. 48)
fig. 45 fig. 46 fig. 47 fig. 48
fig. 49 fig. 50 fig. 51 fig. 52
Step 11 - Insert diffuser assembly and trim ring
Once the foil tape is installed, re-check to make sure there is no material covering the indent (fig. 49) then insert the diffuser
assembly as shown (fig. 50) Use a flat head screwdriver to flip the 4 hold-down tabs inward to secure the diffuser assembly in
position. (fig. 51) Finally, install the trim ring by lining up the inner tabs with the guides then pressing it flush against the diffuser
housing. Turn clockwise to secure. (fig. 52 and 53)
fig. 53
Hold-down tabs
(4 places)
Turn counter clockwise
Once the SkylightTube is installed it requires no maintenance.
However you may wish to rinse off the dome annually to keep
it clear of any residual dirt or debris.