Installation Guide

Page 9 of 10
1. It may be necessary to adjust the Support Box structure according to the conditions present during your
installation. For example, for wooden sub- floors, begin by screwing or gluing a treated 2x4 directly to
the sub-floor to serve as the base for our support structure. For concrete floors, a treated 2x4 is adhered
directly to the concrete floor with adhesive. The 2x4 might need to be cut into several sections if there
is a support brace in the cut out channel.
2. Build the Support Box structure to appropriate height. If working with a concrete sub-floor,
thoroughly inspect and clean the floor in the tub cut out channel prior to securing the treated 2x4.
Remove any materials from the concrete that may cause an uneven surface. Apply adhesive
directly to the concrete floor. Insert the 2x4’s and thoroughly spread the adhesive on the concrete.
3. If wood sub-floor is present, screw the 2x4 directly to the sub-floor.
4. Prior to inserting the small Support Box, it is first necessary to secure a 22 ½” long 2x4 into the channel
of the small Support Box. Place a bead of adhesive around the inside of the Support Box and insert the
2x4. Place several screws into the small Support Box to properly adhere the 2x4 into proper position.
Small Support Box
5. Insert the small box in the channel. At this point, do not adhere the small support box to anything.
Place the large support box into the channel and over the top of the small box. Place the CleanCut
Ultra-Low into position and compress the CleanCut Ultra-Low downward to determine the proper
height and placement for the support box structure.
6. Once the support of the CleanCut Ultra-Low has been achieved, remove the Step and mark both the left
and right ends of the small box where the large box is compressed while the boxes are in the tub
opening channel. Once properly marked, remove both support boxes and label the markings “Left” and
“Right” to avoid potential confusion. Uncompress the two support boxes from one another and begin
the process to permanently adhere the boxes in proper position.
7. Apply adhesive around the perimeter of the large box. Compress the small and large support box
structures back together to the appropriate markings made earlier on the small box. Place the support
structure back into the channel and insert the CleanCut Ultra-Low to verify that proper placement has
been achieved. Secure both sides of the support structure by placing two screws in each side (Figure 8).
8. Apply adhesive to the tops of the 2x4’s that are already in place in the channel, if they are needed for
height adjustment and insert the support box structure.
1 ¼” Dry Wall Screws
FIGURE 7
DRYWALL SCREWS HOLDING 2x4 (each side)
FIGURE 8