Mark Four Enterprises Inc of Fairfield, New Jersey did not honor the warranty on windows purchased and installed by them. This year I had a problem with the hermetic seal on three of the eleven windows.
The hermetic seal is covered under the warranty 100% for repair or replacement for a ten year period. However, they refuse to honor the warranty without cost to me, they want me to pay a $150.00 inspection fee which is not in the warranty and an additional $282.00 installation fee.
Mark Four is a Sears Authorized Contractor. Don't use them they are not reputable.