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Why EnergyCore?

Find out why MI EnergyCore windows with AirCell™ PVC frame technology are so
energy-efficient, stronger, more secure, quieter, with traditional style.

See Our Video Library

Watch our videos to see how our windows and doors are made, what components go into them, and how to maintain and adjust them.

Best Product Award

The MI EnergyCore Window System won the 2011 BUILDERnews Magazine Best Product Award in the Energy Efficiency category.

Architectural Resources

Design professionals can access the information they need to review, select, and prepare specifications for the MI EnergyCore window system.