Beautiful, Weather-Tight, Secure. That's what you receive when you purchase doors from Mertz Lumber. When you want energy efficient as well as stylish windows, we will help you design the perfect window for your opening.

• Therma-Tru entry doors

• FG&P entry doors

• Manion's entry doors

• Larson storm doors

• Koch interior doors

• Midland garage doors

• Hayfield windows

• Minnkota windows

• Marvin windows & doors