The first step in a fiberglass bathtub installation is to pre-assemble the drain parts. You will want to start with the fill valve and waste components. Then you can place the sealing gasket for the fill valve component and install the trip lever for the fill valve, tightening after installation. You are now ready to set the tub in place, level and plumbed so you can screw the installation tabs
. into the wall. The rest of the installation is hooking up all the drain pipes and other plumbing components. More about installation can be found here http://www.onlinetips.org/installing-fiberglass-bathtubs.
