The rigid, one-piece frame of our Labor Saver® floor mounted support with arm extensions drastically speed and simplify installation in thick walls. Fabricated of epoxy coated heavy gauge steel, they are built to fit in narrow wall cavities. Adjustable steel sleeves are clamped to the frame’s uprights when height specifications are met. The sleeves are internally threaded to accept horizontal adjustment of the threaded arms, locknuts and arm extensions. To ensure that the lavatory is solidly affixed to the concealed support arms, our Sure-set locking device easily adjusts from underneath the lavatory to firmly grip its inner wall while leveling screws ensure a precise installation.