Check Your Dock ModelBracket internal size: 8.26' x 3.54' x 1.18'. Designed specifically for the Dell WD19 and WD19S Series Dock, compatible with Dell Dock WD19 and WD19S, Dell Performance Dock WD19DC and WD19DCS, Dell Thunderbolt Dock WD19TB, WD19TBS and WD22TB4. Note: Not compatible with other docking station models not listed. (Acrylic Holder ONLY) Secure and StableConstructed of high-quality acrylic, the dock is sturdy and long-lasting. Three-sided frame design secures the docking station in place, and rubber pads on the bottom prevent the dock holder from slipping on your desk.