Krieger Specialty Products
Extra-Large Doors
to Fit Any Opening
168" x 120" Curved Stage Door
144” x 216” Manually Operated Stage Door
132" x 121" STC 50, 200 PSF, UL Level 3
At Krieger Specialty Products, we custom-build our doors to fit any sized opening and deliver any combination of special purpose performance needs—including acoustical, bullet or blast resistance, radio frequency shielding, and more.

So, whether you’re moving around extra-large items like machinery, stage props, or athletic equipment, or you require acoustical seals for HVAC cooling or simply blocking out noise, Krieger’s oversized doors have you covered. Plus, we offer a full range of customized finish options to seamlessly match your project, no matter how big.
Acoustical & SCIF
Up to STC 55
Krieger's oversized acoustical doors and SCIF-compliant assemblies are rated up to STC 55 and custom-engineered to enhance any location where noise and sound control are of primary concern—from power plants to performance venues.
Blast & Pressure
Krieger's blast and pressure doors are custom-built in any size needed for commercial, government (UFC, ATFP, or others), and industrial (PIP) installations to protect personnel and property from explosions and explosion-borne projectiles.
Bullet & Forced Entry
Our oversized bullet-resistant assemblies include doors, frames, windows, pass-through trays, transfer boxes, voice ports, and more—all designed to protect personnel and property from rifle and small arms fire and to deter unwanted intruders.
Radio Frequency
Krieger's radio frequency door assemblies feature our unique seal and are custom-manufactured in any size needed to provide a radio frequency barrier for high-frequency shielding in installations where TEMPEST standards are required.
Oversized Hybrid Performance
All Krieger oversized doors are custom-manufactured in any special purpose combination you need.
Fill out the online Quote Request form and a Krieger Sales Representative will follow up with you.
“I truly appreciate all that Krieger has done for me and my company while working on this difficult NASA project. The customer service was incredible. There just aren’t companies out there anymore that put effort into helping their clients solve problems, and I had a hard client to satisfy with NASA. Levi Barsis and Belinda Moreno went above and beyond to help get my windows for this project. I’ve been doing this for over 30 years and can say that I will be calling Krieger first for any window needs and I will push your product every chance I get.”
—Butch Parker, Sr. Project Manager, Healtheon, Inc.
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