 Â Core PLUS Construction:
 Multi-chambered design reduces exterior noise, adds insulation and strength and provides thermal efficiency.- Multiple weather-stripping provides outstanding protection against the elements.Up to 5 weatherstrips help reduce heating and cooling costs.
- Screen channel designed for screen removal from inside your home.Half screen and full screen are available.
- Welded frame and sash corners provide strength and protection against air and water infiltration.
- Snap-in interior glazing bead allows easy replacement of glass from the inside
- Double-walled sash design for superior strength.
- Unique sloped sill on double hung  evacuates the heaviest rains much like a wood window sill and keeps bugs out.
- Provision to add windbreak to cut down on air infiltration.
- Extra thick wall design for improved rigidity.
- Provision to add windbreak to cut down on air infiltration.
- Interior groove allows the addition of mouldings such as 3/4" wood and 1/2" drywall return or all u-PVC jamb extension.
- Provision for installation brackets.
- Tilt option available for easy cleaning
- New Ostaco "inLighten" screen is available.Â
Core PLUS Double Hung/Sliders Performance Ratings
| Air Infiltration Resistance |
A3
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A3
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A3
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A3
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| Water Infiltration Resistance |
B3
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B4
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B3*
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B4
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| Wind Load Resistance |
C4
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C5
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C3
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C2
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| Forced Entry Resistance |
F10
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F10
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F10
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F10
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Core Series and Core Plus Series windows are Energy Star approved. Performance chart by USWADA.
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Core PLUS
Double Slider & Double Hung Windows
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The Double Hung and Single slider feature two operable sashes within a single frame. The advantage of the 4 9/16" frame is that it allows for a sloped sill on the hung windows which is not only aesthetically pleasing but also provides for superior drainage. |
Wood Extension Options
- Available with a wide variety of wood extensions from pine to oak.
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Colour
- White, Ostaco Tan, or exterior painted in your choice of colour.
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Glass options
- Standard Low E2;
- our latest comfort technology LowE3;
- or our new Low E 179c
(the best ER rating in the entire world!).
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Options
- A wide range of decorative grilles and energy-smart glazing options are available to give your window a custom-designed look.
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