The side channels present vertical guidance for Keeping the glass panels in place. Evaluate and mark the place the pre-drilled channels must be put in on to the shower partitions. Drill pilot holes into the walls utilizing a masonry drill bit. Make sure the channels align flush into the partitions. https://showerdoorinstallationnea92570.wikicommunications.com/5175671/getting_my_shower_door_installation_newton_ma_to_work