STC (Sound Transmission Class) Openings from 32 to 66 STC rating.
Stainless Steel Frames and Doors up to 5 feet wide and up to 10 feet tall.
Ballistic Doors and Frames from Level 1 to 10. Bulletproof and blast resistant.
Lead Lined doors. Wood and Metal.
RFI shielded openings. From 30 to 120 db EMI.