First I have some window A/C units installed in the windows. I am starting to remodel each room. first is the office, It has a small unit in it 5000 btu and the window size is 3'8 x 4'0 and the small unit is smaller even with the sides stretched out. I know I could get a bigger a/c Unit. What I need to know even if I put larger units in the slide out sides are not safe at all. The room is only 10 x 10 and I want to put in new windows we have brick on the outside. I want it to look nice so I thought maybe add a box out window like maybe 12 inches out and then install the A/C up high and cut brick out. I am or was a remolder so I can do it all just want suggestions. I guess what I really need is suggestions on making it safer, I use the locks on windows. Any help please

I need to replace the back entry door to our 30 year old house. The old door is wood with a window in the upper section. The window slids up and down but is now warped--lots of fresh air coming in. I have 8 dogs who go in and out of the house via this entry. They scratched up the old door and I was not planning on replacing the door until spring. We are moving to a new house and will be remodeling this one for sale. However, with winter coming on, the breeze through that window is a problem. I don't really want to use plastic window covering and it is not cost effective to replace the window. I want to put in a door that can stand up to the dogs' scratching. Steel is out, wood is not a great choice, vinyl is out--a friend suggested "storm proof " glass door--he said it is pretty much impact resistant and could probably handle the scratching better than other materials. I hate to put too much money in this if I am going to have to replace it again in the spring. I have thought about a pet door but only found some that were aluminum storm doors rather than solid entry doors. Any suggestions?