Based in Flushing, N.Y., Crystal Window & Door Systems has introduced the
Series 5500 double-hung aluminum window. Through independent national testing,
the 3-¼ inch jamb depth window has achieved a heavy commercial classification
AAMA 101-97 of H-HC60, said the company.
The window can be used on both commercial and residential applications, for
both new construction and replacement applications.
The window features dual insulating glass with a PPG Intercept spacer, and
has double meeting rail interlock for energy efficiency. Available options include
low-E glazing and argon gas filling.