Certainteed Monogram vinyl siding offers a rich look without the expense and heavy maintenance. You can create a home to be proud of with Monogram's designer palette of over 30 siding and trim colors. Inspired by nature, these colors are designed to harmonize home and environment. Certainteed Monogram is heavy duty .046" thickness with CertiLock™ self-aligning, post-formed positive lock system. Class 1(A) fire rating with a lifetime limited warranty.