2. What type of window can the W5 be installed in? Bella 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 4. Can the W5 be installed directly into a wall? 1. Can the W5 be placed vertically in a window? 3. Can the W5 be installed in an RV or another vehicle? 1. What type of filter will Kapsul W5 have? 1. How many cats can the Kapsul W5 hold on the cooling side? Comments 0 comments Article is closed for comments.