Awning Sizes

by John
(South Essex)

I keep reading two sizes. First is the distance all round the caravan channel: on my caravan it's 820cm. Second is a number similar to a shoe size, typically 11-12 or similar. My question is: what is the relationshiop between these two? If I read of an awning size 12 on eBay, just how big is that in cm round the channel? I need some sort of scale relating the two.
John.

I think that a size 12 is for awning that is 925-950cm. As you require an 820cm awning you would need either a size 7 (800-825cm) or a size 8 (825-850cm). However, when buying an awning always ask the seller to verify the size of the awning in centimeters before committing to buy.