Grandoor Frames is a US-based manufacturer of Wood Doorframes that are Customizable, Affordable, and Readily Available. Fire Ratings from 20-90 minutes. Options for concealed closers and other specialty hardware. Paint grade and assorted stain grade wood veneers. See our website for all options. Ideal for Hospitality, Condos, Multi-family, Senior Living, Apartment buildings, Tenant Finish-Out, Commercial Renovation, Retrofit, Historic Preservation, and House-to-Garage applications.