Do I have to mortar the top of the window or can I make it tight to the wood plate and caulk that joint?

Is it possible to install these in a wood wall without using mortar? Is there some sort of frame I can buy or frame kit that would allow installation with shims, backer rod, and caulk instead of mortar?

Hi there! At time stamp 2:08 into video, please share the brand and type of mortar you are using. Thank you

This is easy of the window opening is the right size. What is the window size is different?

RGF Industries: I need to install one of your REDI2SET vent windows in my entry DOOR, except that the width of my door is ~2 inches, and the width of your vent is ~3 inches. I know that your vent is designed for glass blocks. Can you possibly manufacture a 24 x 8 inch vent that can be installed in my DOOR? You already make a 24 x 8 inch size vent for glass block. This could be a million dollar idea. It is ridiculous that I am unable to find such a vent in the entire planet! Why are they made only for glass block windows and not DOORS? I need a door window vent that can be opened and closed, and that has an insect screen. There is a need for such vents to be installed on exterior doors!!! Please get the idea out there asap, and start manufacturing them to sell the product. Such vents would be ideal in hot hot weather, and for use in spaces, such as enclosed porches and entryways. They are more secure than leaving a window open for ventilation of ordinary home spaces above the basement level. Thank you. I'm sure you will be thanking me if you use this idea, and I'm sure you will profit from it.