Can you coat your vents and drains with TPO or PVC?
What is the difference between the Ex-flow and M-105 vents?

Marathon is one of our top 5 suppliers (out of our 200+). Besides extraordinary service, they provide quick delivery, top quality products and competitive costs. This has enabled us to work together to grow our business each year with Marathon.

— Bob Marrs, CEO, Best Materials LLC, Phoenix AZ