Janus 2500 Brochure

Model 2500 Rolling Steel Door

The model 2500 is the new standard for heavy duty commercial sheet doors featuring universal mount 4" deep 12 gauge galvanized steel guides for strength and durability.  The easy installation, versatility and easy operation make this door the standard of all commercial sheet doors.  Backed by a one year warranty on workmanship and material, this heavy duty Model 2500 is engineered for reliability and value.

Color Chart

The 26 gauge corrugated door curtain is manufactured from full hard galvanized grade 80 steel and coated with Super Durable polyester paint that is backed by a 40 year film integrity and 25 year no-fade limited paint warranty. Available in sizes up to 18’0” x 18’0” and in over 20 different standard colors.

Guide Strip

Tough, durable, wide, heavy duty nylon stripping controls curtain stretch and works in conjunction with the vinyl guide strip to reduce wear and deaden sound.

Slide Bolt

The slide bolt lock assembly affixed to the bottom bar at each end of the door curtain fastens through the guide to securely keep the door 
locked and in the down position.  Padlocks can be attached to the slide to further secure the door.

Door Stop

The flat door stop slide makes installation quicker. Simply slide through the holder on the guide and affix with a fastener.

12 inch diameter drum

The 12” enclosed barrel houses the dead axle assembly and protects the factory 
lubricated springs from direct contact with environmental elements. The inherent strength provided by the spiral barrel minimizes axle deflection providi
ng smoother operation. Because the curtain is attached by screws and not seamed to the barrel, replacement of either independent assembly is cost-effective, quick and easy.

Radial Ball Bearings

Grease-filled, shielded radial ball bearings at the drums provide longevity and smooth operation. Factory installed insert nuts help make the installation of the chain hoist and operator sprocket easier.

Cam Action Spring

A cam-action spring tension holding device allows quick, easy and equal adjustment of the tension on all springs simultaneously from one end of the door. The cam tensioner bites into the axle helping to eliminate the unwanted spinning of the axle during the initial spring loading or adjustment process.

Reduced drive chain hoist

A reduced drive chain hoist allows for smoother operation on doors over 10’0” wide or 10’0” tall.

Mounting Brackets

Mounting Brackets are engineered and designed with deep embossing for 

strength, and are independently tested to withstand more than 2,700 pounds per pair. The installation-friendly mounting brackets feature safe rounded edges and slots that allow for easy vertical adjustments as well as various installation preferences.

Spring tension adjustment

Convenient spring tension adjustment is accommodated by inserting a common 1/2” ratchet tool into the end of the drive shaft and rotating. Initial loading of the door tension can be easily accomplished with a ratchet without the difficulty of spinning the door. This innovation also allows the tension to be easily measured and managed with a torque wrench.

Vision Panels

Vision panels provide outside visibility and allow light entry through the 5” x 17” panel. Constructed of a translucent polycarbonate panel inside a glossy white 20 gauge frame, the panels create no interference with the operation of the door. The location and number of vision panels are limited by door size. Ask a sales representative for details.

Electrical operation sprocket kit

The electrical operation kit includes a sprocket and torque struts that equip the door for wall mounted jackshaft electric operators and can be furnished in lieu of reduced drive chain hoist when provided.

Pantheon electric operator

The Pantheon range of low voltage DC operators are designed to fit enclosed internally in the barrel of the rolling door, providing quiet 
and efficient operation but requiring only minimal side room. The logic controller is designed to be readily compatible with external transmitters, receivers, photo eyes and sensing edges. The operator hand side must be specified when ordering. Ask a sales representative for more details.


Insulation is made of a foil backed, dual layer of heavy-duty polyethylene air-bubble insulation secured in place with a strong adhesive and joined by mylar film to provide an R value of 4. (Top draft stop and side draft stops are also included.)


The header seal attaches directly to the header and extends up to 5” to the door curtain to form an effective barrier from environmental elements.

The top draft stop mounted to the door curtain provides a 2-1/4” weather seal between the door and the header.

Universal mount 2 1/2” deep 16 gauge galvanized steel guides require no pre-installation modifications for wood, steel, concrete or masonry block applications.

Model 2500 Mounting Diagram

2500 Side Room Requirements


Head Room Requirements

An informed customer is the best kind of customer.  As such, a wide array of technical information is provided to you so that your Janus door selection and installation is made easier.  Click this link to view and print the shop drawing for your Model 2500 door.  Here is a helpful drawing of a sample completed door assembly.  Before you begin door assembly, read this helpful Model 2500 installation guide.  If it becomes necessary to adjust the tension on your door spring, follow these door tensioning instructions.

One of the most difficult decisions that you will make is selection of your Janus Model 2500 door color. To aid in the process, we provide you with this handy color chart.  Please keep in mind that the color shown on your computer screen may not be exact.  To view the warranty information just click this warranty link.  

Many of our customers, particularly those along hurricane coastlines, may find this code information helpful.  If you need to work with a local code official, you may find this Janus Model 2500 technical specifications sheet useful.  Print it out and take it with you to aid in your discussions.

Janus Model 2500 doors may be delivered with several draft and seal options.  You may order your door with a draft stop, a piece of rubber that attaches to the door curtain or you may elect to purchase a header seal that attaches to the framed opening.  We also offer a side draft or 'guide weather assembly' that contains a rubber seal and foam strip that attach to the door guide and curtain to provide weather resistance.  Please note that the foam strip attachment is not shown in the guide weather assembly drawing.  Another option is to purchase an insulation package.  This package includes factory attached Foil Bubble insulating material (nominal R-4) and also includes the top and side draft stops.  With or without one of these options, we are convinced that you will enjoy your Janus Model 2500 door for years to come. 

Checkout button

To view pricing for this series door, click the red and white 'View Pricing or Checkout Now' button.  To view pricing for other Janus Series doors, click this link.