Security Door Specialist Inc. is a recognized member of Intertek's Certified Machiners Program, allowing them to modify Intertek Certified Fire Doors and Frames as detailed within the applicable Intertek specification listings. Security Door Specialist Inc.’s site, 1424 Wells Drive, Bensalem, PA 19020 is subject to routine inspections to verify that modifications to Intertek Certified Fire Doors and Frames are done in compliance with the requirements of the Intertek specification listings.