Unlike other manufacturers, Marvin does not build or warehouse an inventory of finished products. Instead, every window & door is made to order for each customer. This Made for you® philosophy enables Marvin to offer the industry's most extensive selection of shapes, styles, sizes and options.
The competition can't touch Marvin's finish. Marvin actually uses the same ingredients in their finish as luxury car manufacturers such as Lexus and Cadillac.
The secret ingredient is the 70% Kynar® resin in the paint. This resin practically eliminates chalking and fading. Marvin's 70% Kynar® finish on extruded aluminum frames exceeds the industry's toughest standard for aluminum cladding – the AAMA 2605-05, and it's the only way to meet it. Watch out for manufacturers that claim to meet AAMA 2605 without 70% Kynar® on extruded aluminum!

Marvin's extruded aluminum window frames and doorframes are much thicker than the roll-formed aluminum (think pop cans and lawn chairs) found in many competing products.
Extruded aluminum is many times stiffer than wood and vinyl and is highly resistant to expansion, contraction, warping, moisture, heat, dents, and scratches. The result? Windows and doors that look great and stay easy to operate for the rest of your life!
Marvin's standards of quality and consistency are second to none. Their quality control strictly enforces an incredible 1/16" tolerance on the construction, so you can know that your windows & doors will fit exactly the way they are supposed to!
Integrity® Windows & Doors from Marvin is made with Ultrex®, a state-of-the-art pultruded fiberglass material twice the tensile strength of steel.
With less than half the thermal expansion of aluminum®, Integrity offers the value of incredible energy efficiency, virtual indestructibility, low maintenance performance and the elegance of handcrafted wood interiors.