Non-Insulated Sectional Steel Door

Wayne Dalton's Model C-20 commercial sectional steel door is designed, engineered, and constructed to assure smooth, efficient operation and to save installation time and effort.  Unique 2" x 3" box-stile design, plus tongue-and-groove construction, adds vertical stability and strength.  Stiles are continuously-bonded to the skin surface with high-strength adhesive, resulting in the strongest possible unit.  The surface is ribbed for added strength.  Independent tests show that these doors are significantly stronger compared to leading competitors.

Model C-20 sectional steel door features pre-finished 20-gauge hot-dipped galvanized sections roll-formed to a full 2" thickness for ultimate strength and durability.  To prevent rust and leakage associated with rivets, fully-fitted 3" wide boxed stiles are bonded to the skin surface with high strength adhesive.  Optional insulation consists of 1-5/16" expanded polystyrene which provides an R-value* of up to 7.64 and a U-value as low as 0.13.

*Wayne Dalton uses a calculated door section R-value for insulated doors.

non insulated sectional steel commercial doors
Door Options

Lite Options:



Insulated Vision Lites allow for visibility while maintaining security.  Full-view sections allow for maximum natural light and visibility.

Options & Accessories:


Chain hoist operation

Motor operation

Sensing edges

Photo eyes

High cycle spring (25k, 50k, 100k)

3" Track

Solid shafts

Perimeter weather seal

Special track designs

Broken cable devices


Vision Lites

Full-View Lites

Impact Panel:

Wayne Dalton's optional Impact Section replaces the traditional bottom section on doors exposed to damage from forklifts and other warehouse traffic.

Reduces downtime and costly repairs

Impact-Resistant composite skins surround an expanded polystyrene core

Fully adaptable to multiple door thicknesses with hinge and section adapters to provide a superior fit

Available for 21" and 24" sections

Available from 8'2" to 16'2" wide in one-foot increments

*Static and Impact Wind Load designs are certified by the state of Florida (FBC), the Texas Department of Insurance (TDI), and the designs are compliant with the 2015 IBC.  No Miami DADE certifications.

Highest Quality Standards

Max Width: 30' 2"

Max Height: 22' 1"

Optional polystyrene insulation, R-value* = 7.64

20-gauge exterior steel

10,000 cycle standard spring

Tongue-and-groove joint profile

*Wayne Dalton uses a calculated door section R-value insulated doors



Online color swatches are only digital reproductions of actual standards and will vary in appearance due to differences in monitor and video card output.  These digital representations should not be used to finalize color selection(s).  Please reach out to us to discuss actual color samples to match your preferences.

Contact Information

2 Lukens Dr.

New Castle, DE 19720

Suite 600

Call Us: 1-888-927-3835


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