Double glazed patio doors (french doors)

French doors - these are both doors and the windows that lead you from the apartment to the open space of your living area: like inside yard, patio or the terrace. These doors will help you to fill your room with light

Double glazed doors the following advantages:

Saving your energy. These doors will prevent heats going away from your flat. You will save 10-15 percent of your money because of less electricity needed to heat your room up.
Silence. These french doors will keep silence in your room without letting in external noises and sounds.
You will produce less CO2, gas, that leads to global warming.

More detailed about glazed doors...

Patio (from the Spanish: patio) the open inside yard of the lodging surrounded from all sides with walls, galleries, grating and so on or the green fence from trees and shrubbery.