
270
• Two Low-E coatings
• Best clarity
• For mixed heating/cooling climates
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270 plus I-89
• Adds I-89 fourth surface Low-E coating
• Increased thermal performance
• Best clarity
• For mixed heating/cooling climates
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366
• Three Low-E coatings
• Blocks more daylight
• Reduced clarity
• Best fade protection
• For warmer, sunnier climates
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366 plus I-89
• Adds I-89 fourth surface Low-E coating
• Increased thermal performance
• Blocks more daylight
• Reduced clarity
• Best fade protection
• For warmer, sunnier climates
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180
• Solar passive glass
• Reduces heat loss through glass to outside
• Allows solar heat in
• For northern climates.
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Tempered Glass
Most glass types are available in Tempered glass versions for applications that require the safety of tempered units. All Sun doors come standard with tempered glass.
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