2. What type of window can the W5 be installed in? JB Hyppolite March 27, 2020 14:58 Updated The Kapsul W5 can be installed in single or double-hung horizontal window frames 21"-36" wide. (insert photo) Related articles 1. Can the W5 be placed vertically in a window? 3. Can the W5 be installed in an RV or another vehicle? 4. Can the W5 be installed directly into a wall? 1. What type of filter will Kapsul W5 have? When are Kapsuls Shipping? When do Preorders Restart? Update (Pre-Orders Open Now)! Comments 0 comments Article is closed for comments.