The passenger compartment windows are resistant to ambient pressure conditions. These pressure conditions relate to a range of altitudes from 1,000 feet below sea level to 51,000 feet above sea level. Pressure seals in the windows keep the cabin pressurization.

The passenger compartment windows are situated on both sides of the fuselage. One of the windows on the right side of the fuselage is part of the overwing emergency door. This window has a different dimension and shape. The other cabin windows have equal dimensions and the same shape, and they are interchangeable.

The windows have pressure seals to keep cabin pressurization and moisture seals to give protection to the cabin from weather elements. The moisture seal also protects internal components in the transparent plies.

In a standard configuration, on Global Express/XRS, each side of the fuselage has 13 passenger compartment windows. As an option, one window can be installed at the forward right side of the fuselage at FS338.20 and/or one window can be installed at the aft right side of the fuselage, at FS788.76. On Global 5000, there are 11 passenger compartment windows installed on the left side of the fuselage, and 12 passenger compartment windows installed on the right side of the fuselage. One window installed on the right side of the fuselage, in the overwing emergency door, has a different dimension and shape. The other windows have equal dimensions and shape, and they are interchangeable.

A small hole at the bottom of the inner ply lets air from the inner part of the aircraft go into the space between the plies. A rubber seal isolates the two plies of acrylic plate to give a thermal air space between the plies.

Global 5000

There is one retainer which is an aluminum ring. It holds the anchor nuts in position. The installation screws engage into the anchor nuts when you install the window. The retainer is installed against the inboard side of the window assembly (which includes the outer ply, the inner ply, the bushing assemblies and the seal). 

There is one outer ply which is a 0.31 in (7.87 mm) thick, acrylic plate with the same contour as the fuselage. The external surface is convex and has a machined edge to make a flat surface with the fuselage skin. There are 40 holes, 0.375 +0.008/-0.005 in (9.53 +0.20/-0.13 mm) in diameter, around the edge. These holes align with those in the inner ply, the retainer, the seal and the outer fuselage skin. 

There is one inner ply which is a 0.23 in (5.84 mm) thick, acrylic plate with the same contour as the fuselage. A small vent hole, 0.062 in (1.57 mm) in diameter, is in the bottom of the inner ply. It is 1.00 in (25.4 mm) above the bolt line, on the center line of the window. This vent hole lets air from the inner part of the aircraft to the space between the plies. There are 40 holes, 0.375 +0.008/-0.005 in (9.53 +0.20/-0.13 mm) in diameter, around the edge. These holes align with those in the outer ply, the retainer, the seal and the outer fuselage skin.

There is one seal which is a molded rubber part that has two grooves. This seal holds the outer and inner acrylic plies together. The middle part of the seal makes a 0.13 in (3.3 mm) distance between the inner and outer plies of the window. There are 40 holes, 0.375 +0.008/-0.005 in (9.53 +0.20/-0.13 mm) in diameter, around the edge. These holes align with those in the outer ply, the inner ply, the retainer and the outer fuselage skin.

There are 40 bushings in the 40 holes around the window assembly. The length of each bushing is 0.63 in (16.00 mm). This dimension is the limit that you can compress the outer ply, the inner ply and the seal when you install the window. The bushing assembly is a metal spacer with a rubber sleeve.