The Galebreaker Manual Rollerdoor range consists of strong material doors that provide access to the full height of the opening. Sheets are easily replaceable in the event of any accidental damage. The Rollerdoors are equipped with semi-automatic locking catch, door tension system, long lasting nylon wind lockers for extra stability. Overall the Rollerdoor is an economical long lasting economy door suitable for agricultural buildings such as general purpose, parlours, feed storage, grain storage and feed passages. The doors are manually operated by a spring assisted chain driving fast operation both up and down. The maximum width available is 6 metres and the maximum height is 5.1 metres. The approximate operation speed is 2 seconds per metre.