Hold the railing in place on the wood floor where you want to install it. Hold a level against one end and adjust the height of the other end until the level shows a level reading. Measure the distance between the floor and the lifted height of the shorter end of the railing.
Transfer the measurement of the distance between the floor and the shorter leg to the end of the longer leg of the railing. Cut off this amount from the end of the railing using a hack saw.
Place the mounting legs over the railing legs by turning the railing over and sliding the mounts over the legs. Use a mallet to hammer the mounts over the legs.
Turn the railing back over and hold in position. Check to make sure the railing stands straight on the floor with the mounts and adjust as necessary with steel washers placed under the mounting plate.
Mark the holes through the leg mounting plate onto the floor with pencil. Drill pilot holes at the markings with an electric drill.
Dip the anchor bolts included with the leg mounts into wood glue and place into the pilot holes. Screw the mounts to the floor with the bolts. Tighten securely.
Mark the placement of any balusters if they go to the floor. Drill out a hole large enough to hold the end with an electric drill.
Slide the baluster into the upper hole on the top of the railing and then into the hole in the wood floor. Squeeze epoxy into the hole to fill in the gaps between the railing and the round hole. Allow to dry as recommended by the manufacturer. Repeat for each section.