Commercial security gate repair services in CA, AZ, CO, NV, OR, TX, UT and WA from Vortex Doors. Free estimate and guaranteed same day service..Blockader offers a variety of security gates for single door openings to large foot openings. We also offer a variety of portable gate options. In stock and ready to ship..Q Air. The perforated panel inserts enable excellent vision into the securede, but still allow air to flow through the accordion blades. Q Air is perfect fores needing high security separated by a gate, but who share the same. Specialty Doors is your one stop for all your hardware needs. We carry accordion doors, barn door hardware, and li.ry ladders. today..