Tub-guard bathtub safety rails tall 16 1/2 inch height. textured, contoured handle provides a good gripping surface. the clamp holds firmly to tub wall without marring tub surface. lightweight, compact design is excellent for travel. fits tubs with walls 2 1/2 inch to 6 1/4 inch thick. not recommended for use with fiberglass tubs. tool-free installation. the tall model provides two gripping surfaces for facilitating both entry and exit from tub. 250 lb maximum weight capacity.