36 x 23 1/2 x 59 One piece surround, fits bathtub part #'s 13-354712232, 13-354712332, 13-354712632, 13-354761632, fits step tub part #'s 13-354711232, 13-354711332, fits shower pan part #'s 13-354724332, 13-354723232, 13-35472332, 13-354724232, available in white or parchment.