Installation Height-Clear all obstructions beneath the dispenser. For ordinary countertops >8''(20cm)/ Reflective countertop >12''(30cm) Dual Installation: Our upgraded iron backplate ensures secure drilling or glue installation with all accessories included Time-Saving: Powered by 4 AA batteries (not included). The sealed waterproof cavity and battery compartment with waterproof coil ensure long standby and easy maintenance Ergonomic design—3-in-1 integrated lid-lock mechanism for simultaneous locking. The 95-degree one-piece lid prevents liquid tipping during filling Hassle-Free: 25oz Large Capacity Stainless Steel for Commercial Use. Touchless for All Family Members at Home Money-Saving: 5-Level Adjust Dispensing for Precise Use, Large Refill Bottles Save More AIKE Support - One year manufacture warranty. Get support via Amazon message or our support email, we are happy to hear your voice and greatly value your experience with us