High-Performance Cold Storage Doors
Built for Demanding Environments. Backed by Decades of Expertise.
Veteran-Owned. Family-Operated. Proudly Made in the USA.
At Therm-L-Tec, we don’t just manufacture cold storage doors—we engineer performance. Whether you're managing a high-traffic distribution center or a temperature-controlled facility, our doors are built to handle extreme conditions while maximizing efficiency, safety, and durability.
With over 50 years of experience in cold storage manufacturing, our legacy speaks for itself. Thousands of facilities across the U.S. trust Therm-L-Tec for reliable, high-quality door solutions that stand the test of time.
Door Types
MANUAL SLIDING DOORS
Ideal for large openings and warehouse access points. Smooth-glide operation with optional track configurations.
ELECTRIC SLIDING DOORS
Automated, efficient, and designed for high-traffic areas. Powered operation minimizes energy loss while boosting productivity.
INFITTING SWING DOORS
Single or double-leaf options with heavy-duty hinges, perfect for walk-ins or employee access zones. Ideal for rooms with space constraints or regulatory requirements.
OVERLAP DOORS
Engineered for tight thermal seals. Panels overlap the frame for superior insulation and minimal air infiltration.
REPLACEMENT DOOR & RETROFIT KIT
Upgrade existing cold storage units without the cost of full replacement. Custom-built to your exact dimensions.
Door Options Available
Series 100
INFITTING
COOLER/FREEZER DOOR
4
Therm-L-Tec's single and double in-fitting cooler / freezer doors are appropriate in a wide variety of applications. This door is most often used as a pedestrian traffic door for processors, dairies, freezers laboratories, coolers or any controlled environment.
Series 200
INFITTING DOUBLE SWING HINGED COOLER/FREEZER DOOR
Therm-L-Tec's double swing cooler / freezer doors are appropriate in a wide variety of applications. This door is most often used as a pedestrian traffic door for processors, dairies, freezers laboratories, coolers or any controlled environment.
Series 6000
MANUAL SINGLE HORIZONTAL SLIDE COOLER/FREEZER DOOR
Therm-L-Tec's Single Horizontal Slide Door is by far the simplest and most fundamental door in the market. Utilizing the fast opening "state of the art" S.S.T. operator, this single slide door is capable of opening faster then our competitor's door of the same size.
Want to Convert Your Door to Power Operated?
The Simplest Add On Power Operator on the Market
Over 20 Years in Service Use
We offer an "Add On" Power Operator for most makes of manual slide doors. Our unit is belt drive for quiet and smooth operation.
OPERATING FUNCTIONS
Pull Cords, Partial Open, Time Delay Close, Floor Loops as Open And/Or Safe, Safety Edge Reverse, and many other sensing devices.
Why Choose
THERM-L-TEC Doors?
Thermal Integrity You Can Count On
Engineered to prevent heat loss and maintain strict temperature zones for optimal product safety and compliance.
Rugged Durability
Built with commercial-grade hardware and heavy-duty insulated panels designed to withstand daily wear, forklift traffic, and harsh industrial use.
Fast Lead Times, Easy Installation
Designed with contractors and maintenance managers in mind. Precision-built for fast installs and minimal downtime.
Custom Configurations
From manual swing doors to oversized sliding models, we offer door solutions tailored to your space and application.
Built to Spec. Delivered to Perform.
Every door order includes
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Custom dimensions to fit your facility layout
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Choice of finish, hardware, and thermal insulation rating
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Approval drawings for every project
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Optional accessories: gaskets, bumpers, vision panels, and more
Backed by a 1-Year Limited Warranty
Need Door Parts or Accessories?
Browse our Parts Store for everything from gaskets to handles. All orders ship fast from our U.S.-based facility.
Want to Keep Your Doors Running Smoothly?
Visit our Resource Hub for Service & Installation Manuals for helpful guidance, specs, and maintenance best practices