@Gofigger thanks for the question! This is a tricky one because the information on the Deluxe vestibule is not easily accessible. It does appear there is a difference in size between the Big House 4 Vestibule and the Big House 4 Deluxe Vestibule. It's difficult for us to provide exact dimensions because, over the years, we have carried different versions of the Big House 4 tent/vestibule (which have slightly different dimensions year over year), however in general it appears that the Deluxe vestibule will be a similar height and length to the regular vestibule but wider on the side that stretches over the tent. This additional width might work, although there's a risk it will create a less-than-ideal gap between the tent and vestibule - and unfortunately, we are not able to locate a Deluxe 4 vestibule to purchase on either our website or the Big Agnes website. If you wanted to order the non-deluxe vestibule and try it with your Deluxe 4 tent, you could certainly return it if the fit is not ideal. We're so sorry we can't be more helpful on this one!
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