Easily with the supplied adhesive without drilling. In case you want to mount it on an uneven wall, we also supply accessories for drilling. 【Design of drainage holes】 The shower shelves have water drainage holes, which allows water to drain off and air circulation to dry the stored objects. No water residue. Moisture Resistant. 【Space aluminum corner shelf】 The shower caddy corner shelf is made of space aluminum, hand-polished, anodized, rustproof and scratch-