the integral cutting guide 20 in one embodiment each triangular notch is approximately 0 376 inches in width and extends approximately 0 188 inches in depth from the edge of the mounting platform during installation the notches may be used to keep multiple mounting platforms in line with each other by using a string chalk line laser or other similar measuring devices for alignment although the notches are shown as being triangular they may be also be of any other shape that provide aid in alignment as shown in fig1 the mounting platform also preferably includes integral measurement guides 52 and 54 along the left and right sides of the mounting platform as shown in fig1 the integral measurements are preferably in inches however the integral measurements may alternatively be in metric denominations or any other unit of measurement or any combination of different units of measurement these measurements may be stamped into the platform or printed on the surface of the platform or applied by appliance in the embodiment shown in fig1 the integral measurement guides 52 and 54 indicate the distance from the center of the integral cutting guide opening along the longitudinal axis a of the mounting platform 10 the integral measurement guides facilitate consistent placement of the platform with respect to the ceiling support members without the need for additional.