Sea Pen DRY 7490 XL Square Gate unit. Purchased new in Oct 2018, in very good condition. Internal dimentions are 7.5 x 3.0m, external dimentions are 8.0 x 3.5m. Gate lower and raise times are 2-4 mins, 30 min drain time (approx). 12m marina berth also available until Dec 2023. Note, boat has been sold, Sea Pen no longer required.