For most caravans, you need to measure it yourself. What you need to know is the length of the straight part of the caravan's awning rail. For caravans with a front slope, they can generally handle a height difference of up to 5 cm and preferably no more than 15 cm into the slope.If the height difference becomes too great, it may become difficult to close the bag of the awning, and there is a risk of water pooling on the fabric. Tips for choosing a bag awningMeasure carefully before orderingChoose an awning that provides protection over the doo…