Series 850

Boyd's Series 850 features thermal-break construction and a heavy-commercial design for demanding conditions. These aluminum double hung windows are perfect for schools, hospitals, and other monumental applications. And if your vision calls for it, we'll provide the series in architectural configurations. Excellent for historic double hung window replacement projects, we've designed the Series 850 with high-performing features: a 4" main frame depth, double weather-stripped sash panels, custodial-key-operated tilt mechanisms, and heavy-duty spiral balances. For better performance, the sash panels use wraparound marine glazing with a 1" insulated glass.

Series 850 Specifications

Series
850
Window Type
Double Hung
Thermal Barrier
Yes
System Depth (Inches)
4.000
AAMA Rating
H-HC40
Testing Standards Method
2005
Air Infiltration (CFM/FT)
.16@6.27
Water Resistance (PSF)
12.11
Structural Performance (PSF)
60.15
Maximum Glazing Thickness
1.00
CRF
50
U-Value
0.50
Interior Muntins
Yes
True Muntins
Yes
Historical Muntins
No
Blinds/Dual Glazing
No
Impact
No
Blast
No
850 Series Detail Drawings PDF DWG
Accessories PDF DWG
850 Series Specifications DOC PDF
Finish Options Finishes