R & R Components, Inc. Website Roof, Floor, Truss, Commercial, Residential, Builder, Contruction, Architect, Contractor, Crane, Glossary, Engineered, Lumber, York, Pennsylvania Welcome to R & R Components, your Roof and Floor Truss Specialist for commercial and residential builders. Located in South-Central Pennsylvania, we can serve a wide area including Maryland and West Virginia. You can get a Quote on your next Truss with our online order form. We also supply Engineered Lumber, greater strength with a lower price. Crane Services are available upon request.