Squeeze a thin line of silicone adhesive onto the tile on the wall where the panel will be fixed. Press the U-channel into place and hold for a moment until it is secure.
Squeeze a second line of silicone adhesive onto the tile where the bottom of the panel will be fixed. Press the second piece of U-channel into place and hold until secure. Allow both channels to dry completely; follow the manufacturer's instructions for drying time.
Slide the glass panel into the bottom U-channel and gently push it straight back until it comes in contact with the wall U-channel. Squeeze a thin bead of silicone caulk along the edge where the panel and U-channel meet to create a waterproof seal. Let the caulk dry in place for 24 hours before using the shower.