Weber GENESIS GENESIS 1500 Owner's Manual page 21

Step 14
Add base panel
You will need: Base panel.
Put the right side in and down, tilt and set the left side in
place. Figure 23.
Base panel
Figure 23
Step 15
Install side panels
You will need: two side panels, and eight plastic buttons.
From the inside of the frame assembly, set the left side
panel in place between the side frame legs.
Notice that there are two sets of holes in each side
panel. Align the holes in the side panel to match the
holes in the left side frame legs. Push in the four plastic
buttons. Figure 24 (a).
Repeat with the right side panel.
top
Left side
panel
bottom
(a)
21
Right side
panel
Figure 24