RetrofitReplacement of existing windows and doors for impact-resistant windows and doors in single-family homes and in multi-family properties. New ConstructionSupply and install impact-resistant windows and doors in new construction projects. Retail SalesSupply both non-impact and impact-resistant windows and doors. WholesaleSupply both non-impact and impact-resistant windows and doors to recurring clients who purchase volume. Wind EngineeringProvide wind engineering services to homeowners, contractors and architects.