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XO or OX |
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Maximum area: |
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30 |
sq. ft. |
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Maximum width: |
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72 |
inches |
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Maximum height: |
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60 |
inches |
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Minimum area: |
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2 |
sq. ft. |
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Minimum width: |
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18 |
inches |
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Minimum height: |
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11 |
inches |
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Minimum sash area: |
1 |
sq. ft. |
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Minimum sash width: |
9 |
inches |
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Maximum sash width: |
36 |
inches |
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| EGRESS: |
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To meet egress requirements, the window must provide a minimum net clear opening |
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of 5.7 sq ft with a minimum width of 20 inches and a minimum height of 24 inches. |
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Minimum frame width for egress: 45.6inches (20 inch clear opening) |
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Minimum frame height for egress: 27.5inches (24 inch clear opening) |
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NOTE!!! A 48.0" x 27.5" unit does not provide 5.7 sq ft net clear opening for egress. |
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Use the following formula to determine egress compliance: |
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(Frame width / 2 - 2.825" ) X (Frame height - 2.64" ) > 821 sq inches or 5.7 sq feet |
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20 inches minimum |
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24 inches minimum |
minimum |
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NOTE!!! This formula applies to window manufactured with half sash only. |