1.Truck will stop on the door seal/door shelter to get awater-tight effect. 2. Most suitable for use in through-wall dock, referigeration house and those place where there is big difference between indoor temperature and outdoor temperature. 3. The dimension will be decided by the customer actual demand and not limited to the normal dimension.Customer need to advise the doorhole dimension. 4. Front hang height:800mm 5. Standard door hole size:2.4mx2.7m, 2.5mx2.8m 6.All thebox and positioning angle are made of aluminium alloy. 7.Technical drawing is available.