National Lumber, a trusted provider of quality building materials since 1934, is a proud affiliate of National Window. Now in its third generation of being family-owned and operated, National Lumber has more than 75 years of experience in providing quality products with exceptional customer service.

Today, National Lumber is New England’s largest independent lumber dealer and employs more than 500 people through its divisions. With product excellence, extraordinary personal attention, and the support of state-of-the-art technology, National Lumber and its family of companies are dedicated to carrying on the tradition of excellent service and quality products.