Chamberlin XL Superior Thermal Efficiency for Extreme Conditions. Boasting a newly designed frame with an overlapping panel, the Chamberlin XL delivers exceptional thermal efficiency, achieving some of the highest ratings of any sliding glass wall system. By incorporating triple-pane glass, the Chamberlin XL goes beyond standard performance, surpassing the building energy efficiency standards required for the harshest weather conditions.
We continuously monitor evolving state regulations to ensure that the Chamberlin XL meets or exceeds energy efficiency standards across all 50 states. Whether you’re facing extreme heat or cold, this door is designed to provide superior protection and efficiency.
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