Skip to the content

About US

Nashville Symphony

MegaMet™ Industries is a leading manufacturer & supplier of hollow metal doors and frames, metal building door systems, aluminum windows and custom hollow metal door systems. As part of Premier Steel Doors and Frames under the S&G Door Solutions Group, a division of Sargent and Greenleaf (S&G) family of brands, MegaMet™ Industries provides high-security door solutions such as customized acoustic, blast-proof, radio frequency shield doors and other specialty hollow metal doors for the most demanding environments. Our comprehensive offering also includes STC Sound Resistant Doors and products, Door assemblies for Storm shelters, Safe rooms, UL 752 Bullet resistant Doors up to Level 8, and Security Doors & Windows.

The Sargent and Greenleaf (S&G) Family of Brands deliver proven lock and door solutions that protect people and assets at home, at work, and in communities around the world. Our unique portfolio of lock and door solution brands serve a wide range of our customer’s security needs across industries and applications. Together, we are on a mission to make the world more secure today and in the future.

MegaMet's™ two-decade and a half of Manufacturing Quality Specialty and Custom Hollow Metal is here (year # 25). We have continued to grow each and every year, even through the great recession years. Our sales are exclusive with our very loyal Distribution network sending in enviable projects, from all over the Americas', overseas, and from every corner of our great country. Because of our quick lead-times, we can reduce our Distributors' inventory to the absolute minimum and our Distributors are not required to carry any level of MegaMet™ inventory. To accomplish this, we continue to invest in technology and modern equipment, as well as continue to add team members with "Lean" manufacturing disciplines. We have recently invested over $ 350,000 in our new door line, which boasts the most advanced Forming and Resistance Welding Technology. MegaMet™ has long been a leading supplier in the Custom Hollow Metal Door and Frame market. This segment of accelerated delivery of our doors and frames still gives us great opportunities for growth. The brightest horizons, however, are that we continued to develop our Specialty Door product lines, and from 2007 through 2018, we've enjoyed an explosion in growth with our Specialty Door product lines, including our Acoustical, Blast, Ballistic and now our EMI/RFI Shielded Doors. Please, click-on any Blue Hyperlink text below for more detailed information – Thank You All very much!!

Our MegaSonic™ line featuring the very “Green” Models 1A, 2A, 3A, and 4A ranging from STC 37 to STC 56. The Model 2A’s unique design allows it to swing on standard heavyweight hinges and requires only an ADA threshold and concealed Gasketing with no mechanical door bottom to achieve an STC 52.

And Introducing our Cam-lift Models 3A (STC 53 1-3/4” Door), and 4A (STC 56 2-1/4” Door), that features an integral adjustable and removable bottom door section that’s concealed!! This patent-pending exclusive feature allows for bottom seal removal, in-the-field without having to take the door down! Model 3A and 4A Cut Sheets

Our latest addition to our offerings are the MegaFreq EMI/RFI resistant assemblies. Two models to chose from, 40-60dB or 60-100dB of attenuation, this performance was proven using the latest IEEE-299 test standards across the 10kHZ through 10GHz spectrums. Hybrid STC-EMI/RFI Shielded Sound Doors are available using the same great user-friendly adjustable, removable door bottom used in our STC Doors.

"SCIF" = Sensitive Compartmented Information Facility - Department of Defense term for "Secure Room". MegaMet's ICD 705 compliant assemblies EQUALS most secure SCIF package. MegaMet™ offers many ICD 705 certified hardware packages, all installed at our American factory, located in The-Heart-of-Dixie. Hybrid MegaSonic™ and MegaFreq™ Shielded (up to 100dB), and Sound rated (up to STC 56) Doors, for SCIF assemblies are approved for "Sound Groups" 3 and 4. Packages include the MegaStrong™ and MegaFlex™ Split Frame with Hinges, Closer, Locking Device, EPT, Mag. Switch, Threshold, and Seal systems. Standard Door Sizes in 2" increments and up to 4'0 x 8'0, with Fire Ratings available of up to 3 Hours! 

Our MegaDefend™ Bullet Resistant assemblies are UL-752 approved for up to Ballistic Level 8. We also are offering Hybrid Acoustical, Ballistic, Blast combination technology assemblies.

Our MegaBlast™ Doors and Frames are designed to resist exterior Dynamic load pressures of UFC 4-010-01 DoD Antiterrorism Standards and comply with fabrication requirements of ASTM 2247-11, Category or Level of Protection as certified while demonstrating compliance with ASTM E1300, F1642, F2247, F2248, F2912, and F2927. Charge Weight 2 with a Stand-off Distance of 86’ feet, Category II is our Minimum Grade, and Credentials for up to Stand-off distance as close as 26’.

Our “D” Door is our MegaStrong™ and is the new Standard for Commercial Grade Hollow Metal Doors certified equal to NAAMM’s 861 Door and has passed Twist, Slam, Crush, tests and Large Missile Impact tests, as well as, passed an industry high 4,000,000 cycle test.

Our MegaGard™ is a 2” thick 12 Gauge Detention Door passed 850 pendulum ram impacts @ 200 ft-lbs from the push side, 14,000 pounds of static loads with less than ½” of deflection.

We can fill your need for less common heavily engineered Over-sized products, like huge Sliding Doors and Segmented (Chorded) or Radius Arch Top Frames.

Our Mega-SS™ Stainless Steel Door recently passed several UL Fire tests. 

Our MegaStorm™ assembly offerings continue to multiply. Our wide variety of Sidelights and Transom frames carry the latest HVHZ and Large Missile impact approval from Florida Building Commission’s 2010 standards.

Now our MegaStorm™ line includes FEMA 361 Tornado resistant Doors and holds verification of FEMA approved construction by an independent Structural PE and our Certification of Construction Compliance by MegaMet Industries.

Our main commitment to you is to stay up to date with our products and services. MegaMet™ is an active member of NAAMM and the HMMA’s Technical Committee by contributing time and input to our industry standards such as HMMA’s new 865-13 Sound Control Standard and 850-14 Fire Rated Hollow Metal Doors and Frames.



3228 6th Avenue N
Birmingham, AL 35222
(205) 322-7700


Atlanta, Georgia - Houston, Texas - Birmingham, AL (MegaMet Division)
Manufacturing: Acoustical, Ballistic, Blast, Detention, EMI/RFI, Oversized, Radius, Security, Stainless, Veneered, Windstorm, and X-ray Steel Doors and Frames

MegaMet Industries: | | 205-322-7700


MegaMet Industries

3228 6th Avenue North
Post Office Box 635
Birmingham, AL 35201

Tel: 205-322-7700

Customer Service
Email Us


Order Entry

QC Issues - Form Submission

Job Status - Form Submission