Just make sure whatever you install is able to be opened from the inside for getting out in case of fire. If you are the only house on the block with bars, it often draws savvy thieves as they wonder what you have in your place. If most of the block has bars, put them on too. Because then the lazy thieves will not go after the easy pickings, your place. I've been in big urban where both were true, either one or two houses on the block had the bars and they were targeted; or everyone pretty much did and whoever didn't got lots of breakins. One house I rented that had bars, they had some funny latches the landlord had to show me how to work, so I could get out of the house if I needed to for fire. It was code, the latches.

I do not know but maybe some pro's will offer comment.

Hello Sagar, This space is sufficient for a bathtub in a bath. Thanks, Nitin CORNERSTONE DESIGNS, Bangalore

Jaggi, We guess that it is roughly 20-25'x 25-30'.