521 series

aluminum-glass-door-521-600
Aluminum Glass Door model 521 is a sectional aluminum door a​ppropriate for environments where maximum light infiltration and/or visual access is required. Designed to fit openings up to 26'11" (8204 mm) wide and 20'1" (6121 mm) high, the Model 521 features a wide, 2-11/16" (68 mm) center stile, 3-3/4" (95 mm) or 4-1/2" (114 mm) bottom rail, based on door size.
Features

Standard max width 
26'11" (8204 mm)

Standard max height 
20'1" (6121 mm)

Section thickness 
1 3/4" (45 mm)

Material 
6063-T6 aluminum

Standard finish 
204R-1 clear anodized(painted white at no charge)

Center stile width 
2 11/16" (68 mm)

End stile width 
3 5/16" (84 mm)

Top rail width 
2 3/8" (60 mm) or 3 3/4" (95 mm)

Top intermediate rail width 
2 1/8" (54 mm)

Bottom intermediate rail width 
1 19/32" (40 mm)

Bottom rail width
3 3/4" (95 mm) or 4 1/2" (114 mm)

Weatherseals 
Bottom, flexible PVC

Standard springs 
10,000 cycle

Track 
2" (51 mm)

Mounting 
Angle

Operation 
Manual pull rope ​

Hinges and fixtures
Galvanized steel ​

Lock 
Galvanized, interior-mounted single unit ​

Door Options