Manufacturing Facility

Kieffer & Co., Inc.’s manufacturing facility is located in Sheboygan, Wisconsin.

Key features of our facility include:

  • 100,000 sq ft of dedicated manufacturing space
  • 10,000 sq ft of warehouse space to accommodate order bundling and indoor sign storage
  • 10,000 sq ft of general office space


Kieffer & Co., Inc. takes great pride in the quality of our manufacturing personnel.

Key features of our personnel are:

  • Highly trained and dedicated personnel in all aspects of the sign fabrication and assembly processes
  • Superior safety performance in all departments
  • Certified Welders


We recognize that high quality, cost-effective signage comes through the use of best-in-class manufacturing processes. We utilize these processes to produce signage that meets or exceeds Underwriters Laboratories requirements and is UL listed. Completed signage is provided with field instruction manuals and tracked with a computer driven system to monitor service history.


Key Manufacturing Processes:


Kieffer & Co., Inc. is able to meet or exceed our customers’ expectations using state of the art technology in our CAD/CAM departments. Experienced CAD operators using state of the art software for channel letters, cabinets or other customer design needs create the necessary CNC files to ensure the best quality in a cost effective manner.  We have two of the best CNC Routers in the industry. These machines were designed and built to our specification which allows us to have a greater capacity and cut sign parts accurately, such as Aluminum, Plastics, Sign Foam Board, Expanded PVC, Wood, HDU Board, and a variety of others in both 2D and 3D shapes.


Kieffer & Co., Inc. has the creativity and experience to meet your sign decorating needs by using high quality vinyl films and various substrates in accordance with the customer’s specification. Kieffer has two high-speed vinyl cutter/plotters capable of cutting all types of vinyl films and substrates and an 80” roll laminator.


Kieffer & Co., Inc. utilizes the most current illumination technology whether LED, fluorescent, neon or other type of lighting to meet the customer needs. Kieffer works with the major LED manufacturers/suppliers to stay abreast of changes in LED technology.  Kieffer also has journeymen neon benders on staff to accommodate your neon needs.

Cabinet Fabrication

With over 100 years of combined experience of skilled labor, Kieffer & Co., Inc. has the ability to make your Pylons, Monuments, Lawn Signs, and Free-formed wall signs in a variety of unique shapes, sizes, and designs. Kieffer utilizes aluminum extrusions and structural shapes with steel as the main structural component as needed, in our state-of-the-art manufacturing facility using the most current technology and equipment. Our signs are fitted with the best illumination and finished with a high-grade acrylic polyurethane paint by Akzo-Nobel sign finishes.

Channel Letter Manufacturing

Kieffer & Co., Inc. has a state-of-the-art proprietary production line process that can quickly produce large quantities of channel letters, by using automated forming equipment, custom designed letter stitching machines, and a completely tooled assembly line process. We are able to accommodate all customer designs, fonts, and styles. Illumination is provided by using the best LED’s in the sign industry. All illumination is production line tested to ensure it meets the customer’s’ needs, brightness, and evenness. Our channel letter process is designed to go from fabrication to crate using the least amount of handling possible for less congestion, reduced idle time, and timely delivery.


Complete with full color mixing capacity, we are able to match over 10,000 colors creating a vibrant palette of sign finishes. We use modern electrostatic painting equipment to provide high quality painted finishes using Akzo Nobel Acrylic Polyurethane Coatings. Environmentally friendly processes create conditions where air emissions consistently register below limitations established by the Department of Natural Resources, EPA, and OSHA.

Crating and Freighting

All signs are carefully crated into custom packaging designed to meet the National Motor Freight Carrier’s specifications. Capable of shipping via flatbed, LTL; single or large capacity loads; via shipping brokers, with 3rd party billing, and internationally, we have numerous options to meet our customer’s freight requirements.

Research & Development

Kieffer & Co., Inc. is committed to developing the best products for Kieffer’s customers which include, experimenting with creative designs, ideas or suggestions from clients, staff and partners. We also have the ability to experiment and test different components within the sign including LED’s. Our weather rooms are designed to test our signs in environments down to -18°F and up to 150°F and can also simulate UV environments.  Some of the experiments and testing we are able to perform are listed below, but are not limited to:

  • Salt Water Spray Testing
  • Light Output
  • Color Rendering
  • Age Testing – to assure maximum performance of materials
  • Side-by-side comparisons of LEDs, lamps, vinyl film and pigmented acrylic


Kieffer takes pride in operating a clean and safe plant and has achieved numerous records and received many awards, with our best record being 425 days worked without an OSHA reportable injury and becoming SHARP (Safety and Health Achievement Recognition Program) approved.