Replacement Window Comparison Chart
Not sure which series is best for your home? Use this chart to compare our products side-by-side.
| Key Features | Potomac-hp | Fortis | Georgetown |
|---|---|---|---|
| Performance Grade | 65 | 50 | 40 |
| Air Infiltration (cfm/ft²) | .01 | .02 | .09 |
| VyFoam™ | Frame & Sash | Frame & Sash | |
| Fusion-welded Frame |  |
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| Fusion-welded Sash | |
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| Jamb Depth of Frame | 3 1/4″ | 3 1/4″ | 2 3/4″ |
| Sash Configuration | dual | dual | dual |
| Lock and Keeper w/ Composite Reinforcement | |
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| Integral Locking Sash | |
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| Cam Locking System | |
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| Integrated Sash Lock and Tilt System | |
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| Tilt-in Sash for Easy Cleaning | |
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| Dual Vent Latch | |
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| Balance System | constant force | constant force | constant force |
| Glass Strength | double-3.0 mm | double-3.0 mm | single-2.5 mm |
| Insulating Glass Unit (IGU) Thickness | 7/8″ | 7/8″ | 3/4″ |
| Warm Edge Spacer System | Super Spacer® | Super Spacer®, Duralite® | Duralite® |
| Mortised Sill Dam Wall | |
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| Sill/Sash Interlock | |
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| Magnetic Seal | |
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| Glass Packages | Potomac-hp | Fortis | Georgetown |
| Energy Saver Plus™ | |
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| Energy Saver Max™ | |
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| Energy Saver R5™ | |
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| TripleSilverLoE™ | |
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| Energy Saver R5 w/TripleSilverLoE™ | |
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| Design Features | Potomac-hp | Fortis | Georgetown |
| Interior Colors | White, True Black, Beige | White, Beige | White, Beige |
| VyCoat Exterior Colors™ | |
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| VyWood™ Interior Laminate | |
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| Flat Grids | |
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| Contour Grids | |
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| Simulated Divided Lites (SDLs) | |
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| Screen Options | Potomac-hp | Fortis | Georgetown |
| Screen Frame | Extruded | Extruded | Extruded |
| Fiberglass Screen Mesh | |
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| VyClear™ Screen | |
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| Flex Screen | |
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