Doors and tinted windows for prefab houses

I am looking for doors (normal and sliding) as well as a tintable windows system (or controlable blinds system, if you will) to incorporate into prefab houses that are to be sold. I want nothing complicated or fancy, just something that I can buy and use in my builds. What would your recommendations be ?

Thank you in advance for the help.

I have some great scripted blinds for sale that you might be interested in.
They come in a high-prim and single-prim version, depending on your needs.

Contact me in world and we can talk about getting you a full-perms copy of them.