Window Frame Adapter Installation Guide JB Hyppolite August 31, 2020 22:08 Updated *Editorial Note: The Window Frame Adapter will only fit in single or double-hung windows that have an opening of 22''-36".* Related articles Latest Update: I backed you on Kickstarter or Indiegogo. Can I get a refund? Kapsul Operating Manual & Safety Guide Why Does My Kapsul Turn "On and Off?" Kapsul: Complete Setup, Install, and App Kapsul Is Finally Here In Time For Summer Comments 0 comments Article is closed for comments.