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Convert garage to living space

My garage is 25 years old and we want to work on it bit by bit. We want to start with the roller doors. There are 2 roller doors 2.47m (width) & 2.06m Height. We want one door as a ranch slider with a screen security door and the other door changed to sliding windows with screen. We also have 2 windows we want converted to sliding windows with screen mesh. Window one is 1.83m (width) 1.29m (length) window 2 is 2.39m (width)x 1.100m (length)