Outwell Vermont Side Extension 2011 Premium Collection. Canopies & Extensions. A popular way for campers to upgrade their Vermont. & a perfect match to the Vermont for colouring & contours. The Side Extension is ideal for additional shelter for those who do not want a fully enclosed space. As ever, its shape & mate.. ... AVAILABLE IN: VERMONT SIDE EXTENSION 2010 VERMONT SIDE EXTENSION 2011