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820 series windows are designed with a wider full frame look and stronger weather in mind. Equal glass sightlines present a balanced look between window vents. Available as custom picture windows, sliders, single hung windows or in combinations. Engineered for strength and efficiency and optimum weather performance.

•  The 820 offers a wider, deeper “full” frame traditional window look.
•  Frames are 3-1/4” deep, with a beveled exterior face.
•  Recessed 3/4” thick double pane glass.
•  Mitered corners, and matching color drain hole covers.
•  Slider vents glide on adjustable steel axle nylon rollers on a durable vinyl track.
•  Standard Mercer Crescent latch automatically locks when the vent is closed.
•  Equal glass sight line is built into the frame–no drop in panels or adapters.
•  Wind resistance rating is 134 mph

< Inside view

RATINGS PERFORMANCE

820 Thermal / Optical Performance* Glazing Type “U” Factor Solar Heat Gain Coefficient Visible Light Transmittance Horizontal Slider       Clear Glass 0.47 0.60 0.64 LoE 272 with Argon 0.30 0.32 0.56 LoE 366 with Argon 0.29 0.22 0.50 Single Hung     Clear Glass 0.46 0.61 0.64 LoE 272 with Argon 0.29 0.32 0.56 LoE 366 with Argon 0.29 0.22 0.50 Picture Window with Slider Bar     Clear Glass 0.45 0.63 0.67 LoE 272 with Argon 0.27 0.34 0.58 LoE 366 with Argon 0.26 0.22 0.52

* Cardinal XL Edge Dual Seal Insulated Glass Units without grids. “U” Factor:The rate of non solar heat loss or gain through a given glazing. The lower the number, the better the insulating quality. Solar Heat Gain Coefficient: The fraction of direct solar radiation that enters a building thru the glass as heat. Lower numbers mean the glazing lets less heat in. Visible Light Transmittance: Measures the amount of light transmitted through the glass. VT is expressed as a number between 0 and 1. The higher the VT, the more light is transmitted. 820 AAMA Certified Window Performance Ratings Glazing Type Test Size Rough Opening Vent Size AAMA Performance Rating Uniform Structural Load MPH 5 Gal/Ft/Hour=8"/Hr Water Resistance MPH Horizontal Slider           820 Horizontal Slider 72" x 60" 72" x 72" 36" x 60" 36" x 72" HS-R30 HS-R20 45 PSF = 134 MPH 30 PSF = 109 MPH 4.5 PSF = 42 MPH AIR = .17 cfm/ft∧2 4.5 PSF = 42 MPH AIR = .17 cfm/ft∧2           820 Horizontal Slider XOX 120" x 60" 30" x 60" HS-R20 30 PSF = 109 MPH 3.0 PSF = 35 MPH AIR = .11 cfm/ft∧2 Single Hung           820 Single Hung 56" x 91" 56" x 45" H-LC25 37.5 PSF = 123 MPH 4.5 PSF = 42 MPH AIR = .15 cfm/ft∧2 Fixed Picture Window           820 Fixed Picture Window   96" x 72"   FW-C30 45 PSF = 134 MPH 12 PSF = 69 MPH AIR =0 .00 cfm/ft∧2 Fixed Over           820 Fixed Over XOX 96" x 72" 24" x 24" HS-R20 30 PSF = 108 MPH 3.0 PSF = 35 MPH AIR = .11 cfm/ft∧2 Double Single           820 Double Single Hung 96" x 60" 48" x 30" H-R20 30 PSF = 109 MPH 3.0 PSF = 35 MPH AIR = .15 cfm/ft∧2 Single Hung Picture           820 Single Hung-Picture Window-Single Hung 120" x 72" 30" x 36" H-R20 30 PSF = 109 MPH 3.0 PSF = 35 MPH AIR = .10 cfm/ft∧2

Wind Resistance Rating

820 Series     134mph