We got the Murphy bed for my89 year old Dad to sleep in over Christmas.  Upon assembling it we realized that he would have a hard time sitting on it and getting up.  He is very tall and his legs don’t work as they should anymore.  So with two weeks to spare, we ordered these box springs.  They came with a week to spare and they will be perfect.  Of course, we are going to have to remind him to watch his head when he sits up.  AND...bonus points.  The cats have given their seal of approval.