Korber Models #304B O Scale Roundhouse “Big Boy” Extension
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Korber Models #304B O Scale Roundhouse “Big Boy” Extension

Add more depth to a stall of a Korber 304 roundhouse to accommodate extra-long engines such as the Big Boy.

The Korber Roundhouse “Big Boy” extension includes molded brick details, laser cut windows and a real wood internal support structure to bring life to your model railroad.

 This kit has been upgraded with new laser cut windows featuring detailed mullions, real wood laser cut doors.  Walls are molded in a red brick color to provide extra detail. 

The Korber 304B "Big Boy" extension adds a three sided "shed" to the back of a stall in a roundhouse to create extra room fo rthe larger engine.

The kit comes complete with newly created easy to follow instructions that offer simple steps to provide a great looking roundhouse including several options that allow you to take your layout to the next level.

New Korber Komplete - Kit assembly service

Korber Komplete is a service that provides layout ready structures, delivered to your doorstep, simply place on your layout and enjoy the detail and excitement a well-crafted structure can all to your layout.  Now that great Korber kit you wanted to add to your layout, but were concerned you didn’t have the time, or felt you might not be up to making can still be enjoyed for years to come.

Korber Komplete service starts with the same great Korber kit you can assemble yourself, but taken to the next level with expert craftsmanship by one of our experienced modelers, who will assemble, paint, and optionally add lights and weather the structure for you.  We then carefully package the completed structure within a box and packing material, and then that box is placed within a larger box surrounded by packing material.  This approach ensures that when you receive the structure it is just like it left our shop.

Korber Komplete Ordering:

Using the pull down menu above you can select from four different options

Standard Kit: select this option for the standard Korber kit you have always known.

Built Up & Painted: select this option to have the kit assembled and painted. This includes adding mortar for the brick areas, and painting the windows and doors as well as appropriate trim areas.  The kit will generally look like the photo shown above.

Built Up, Painted & Lighted: select this option to have the same services as the Built Up and Painted option, but in addition we will add a lighting set internal, and as appropriate outside the building.  The lighting is designed to run on AC or DC up to 16 volts.

Built Up, Painted, Lighted & Weathered: select this option to have the same services as the Built Up, Painted & Lighted option, but in addition we will weather the building using dark colors to represent soot, dirt, rust and other colors as a appropriate to make the structure look like it has had a life time near the tracks.  Choose this option for the most realistic looking addition to your layout.

Built up kits have a 3-4 week lead time

Made in the USA

(Requires assembly and painting Glue not included)

For use by ages 14 and up

  • Item #: 304B

Korber Models #304B O Scale Roundhouse “Big Boy” Extension

Price: $55.00
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