National Lumber Inc. has been the heart of the building industry in the New Haven area for more than 60 years. We are locally owned and operated and provide full-service framing, millwork, trusses, engineered joists & beams, windows, kitchens and trim. We work hard to ensure timely deliveries and efficient order production. We have a fleet of dump and boom trucks to deliver materials, as well as a professional, reliable residential estimating department for contractors and homeowners. We want your business, so contact us today.. Building Products; Rough & Dressed Lumber; Pine Lumber; Cedar Deck Lumber; Pressure Treated Lumber; Plywood and OSB; Engineered Roof Trusses; Floor Trusses; Windows; Doors; Wood Siding; Vinyl Siding; Shingles; Parrallam Beams; Interior Trim; Moldings; Pre-Hung Doors; Particle Core Cabinets; Custom Kitchen Cabinets; Kitchen Counters