My husband and I are planning on renovating our mudroom. The mudroom is an addition that has managed to maintain several of the original exterior features including siding and exterior window. We are currently unsure of what we want to do with the window. We do not want to replace it with drywall because it lets an appreciable amount of sunlight into the kitchen, and we do not want to make it open air because the mudroom is not heated (although we are considering changing this). Any other suggestions on what we should do? Are there any windows designed for intra-house use? We do not need (or want) it to be able to open.