Hi All, Safari rooms come in all different makes and sizes - how best do I measure my awning so as I can work out which size fits? I am guessing that as I have an omnistor 5000 awning, i need an omnistor safari room. I have measured the width of the fabric and this is 2.9M which I am also assuming is a 3m unit? How do I determine what height of room i need as some are 2.25M some are 2.5M some are 2.75M? If I measure from the ground - to which height am i measuring? To the base of the unit? to the top of the unit? somewhere else?