Brands you can trust

Our portfolio


The most recognized manufacturer of high-quality, made-to-order specialty door systems, Chase Doors is dedicated to delivering custom-made solutions tailored to specific needs.
Explore their diverse product line and range of innovative solutions, including:
- Rotomolded double-acting traffic doors
- Corrosion-resistant doors
- Cold storage doors
- Sliding fire, service, and pharmaceutical doors
- Flexible doors


Curtron Products is a trusted partner for restaurants and food service providers seeking to streamline operations, reduce energy costs, and uphold the highest standards of cleanliness and safety. Curtron’s comprehensive solutions ensure optimal temperature control, sanitation, and pest management.
- Cooler & freezer strip & traffic doors
- Rack equipment covers
- Swing doors
- Air curtains
- Pest control products
- Restaurant safety products


Door Engineering is a trusted partner for architects and builders seeking high-performance, visually appealing fire station and aviation door solutions, providing a range of customized and pre-engineering door system options.
- Four-Fold, aviation, fire-rated, & other distinctive specialty door systems
- Industrial & commercial applications
- Variety of aesthetically pleasing fabrication & finishing alternatives
- Seamless integration into diverse architectural designs


With a diverse selection of commercial, restaurant, and retail double acting traffic doors and frames, including gate and café doors, Eliason offers solutions that suit your unique requirements to facilitate seamless movement, enhance productivity, and create a safer working environment.
- Double action swing doors designed for exceptional performance & reliability
- Improve traffic flow & enhance accessibility
- Optimize operations & ensure compliance


Hercules® offers a complete line of specialty doors for your specific applications including Blast Freezer, Freezer, Cooler, Docks, Processing, Automotive Test Cells, Research Facilities, and Distribution Facilities. With more than a dozen different designs, Hercules® has the door to suit your climate controlled needs. Controlled environment door solutions for food manufacturers and distributors in the dairy, meat, produce, beverage, pharmaceutical and food processing industries.
Controlled environment door solutions include:
- Sliding doors
- Swinging doors
- Bi-parting doors
- Vertical lifts
- Overlap doors


With a strong emphasis on short lead times, customer satisfaction, and product innovation, HMF Express sets the standard for custom hollow metal products, offering unparalleled quality and reliability that not only meet but exceed industry standards.
- Custom metal doors & frames
- Team of skilled professionals & quick turnaround
- Cutting-edge technology


Since 2005, Subzero Engineering has contained critical environments and provided exceptional solutions to the world’s most demanding technology companies. A global leader in turnkey engineering solutions for Simplex industrial cleanrooms, data centers, and mission-critical environments, Subzero solutions provide maximum efficiency, minimize downtime, and reduce energy consumption.
- Customized solutions based on client needs & requirements
- Specializing in new data center builds & upgrades to existing facilities


Thermoseal, a leading provider of commercial refrigeration solutions, offers DOE compliant cooler and freezer glass doors and merchandising systems designed for superior viewing and performance. With a focus on sustainability and cost-effectiveness, Thermoseal doors provide clear visibility while maintaining optimal temperature control and energy savings.
Controlled environment door solutions include:
- Glass refrigerated doors
- Stationary panels, PVC fixed windows, & viewports
- Accessories
Our growing portfolio
Founded
1932
Chase Industries, Inc.
(acquired in 1999)
Acquired
1985
Durus Industries
the premier RotoMolder
of traffic doors
Acquired
1993
Saino
the oldest and most
respected brand in
the fire door market
Milestone
1997
Econo-Max
adds new PVC manufacturing capabilities
Acquired
2007
ColdGuard
a small cold storage door company
Acquired
2009
Fib-R-Dor
Merger
2012
Eliason
premium traffic door brand focused on restaurants
Founded
2015
Senneca
specialty door leader
Acquired
2015
Thermoseal & Rubbair Door
Acquired
2016
Door Engineering
premier brand
for aviation &
fire station doors
Acquired
2017
TMI
premier PVC strip line
Acquired
2017
Curtron
restaurant
& food service
Acquired
2017
Subzero Engineering
data center containment
Acquired
2018
Hercules Door
cold storage
Acquired
2019
HMF Express
hollow metal doors and frames
Founded
2019
Door Engineering Center of Excellence
established in Mankato, MN
Founded
2019
Thermoseal Center of Excellence
established in
Irving, TX
Founded
2019
Subzero Center of Excellence
established in
Salt Lake City, UT
Founded
2022
Cold Storage Doors Center of Excellence
established in Cincinnati, OH
Founded
2023
HMF Express Center of Excellence
established in Houston, TX
Founded
2023
HMF Express Center of Excellence
established in
Las Vegas, NV
Founded
2024
HMF Express Center of Excellence
established in Minneapolis, MN
Founded
2025
HMF Express Center of Excellence
established in Columbus, OH
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Learn more about our family of leading brands when you contact us.