Wide 5.5" trim around sandbox encourages seating around the sand or for creative play / building along these wide edges. Sandbox dimensions are 46"x 39" x 6.5". Cedar sandbox (without lid) is made using Canadian cedar. Inner lip on cover will keep the cover in position when in use. Cover ensures wildlife and local cat population is prevented from accessing the sand. Cedar cover measures 37.75" x 35" x 2.5".