Midlantic Sales Group is the Maryland, DC and Virginia representative for manufacturers of interior finishes and acoustic specialty architectural products, as well as exterior façade, cladding, and screening systems . Our manufacturers include Cambridge Architectural, CEAS+, CertainTeed Metal, CertainTeed Wood, Decoform, Decoustics by CertainTeed, Gage Corp., G&S Acoustics, MBI, Metalwerks, Mull-it-Over, Panelex, Speech Guard, Technowood, Tectum by Armstrong and WoodN.