 
- 1 Installer in Burtonsville- DetailsP. J. McTavish & Company Inc.4308 Sandy Spring Rd Burtonsville, MD 20866 301-918-5874Installer Certified InstallerA Certified Installer is a company that focuses on a variety of products as well as VELUX products. This company will have completed VELUX's certification program and will have sufficient knowledge to assist customers in VELUX projects. Certified InstallerA Certified Installer is a company that focuses on a variety of products as well as VELUX products. This company will have completed VELUX's certification program and will have sufficient knowledge to assist customers in VELUX projects.
 
