Hello!
Sorry for the delay in responding to your query. Unfortunately, I am unable to tell you, definitively, what the siding material is or the name of the vendor, as we only manufactured the windows for this project. I can tell you, however, that the exterior wall finishing materials for this development (Baxter Creek at Whistler, BC) was limited to stone, wood shingles, wood siding, composite wood and cement board siding. (taken from: Baxter Creek Site Development Guidelines - http://www.baxtercreekwhistler.com/downloads/Baxter-Creek-Design-Guidelines.pdf ).

Hope this helps!