Material and Finish Selection

SpectraShield® Powder Coated Finish
Cornell’s metal closure products are offered in steel, stainless steel or aluminum. Finish options allow Cornell products to fit—and often contribute to—the visual aesthetics of a building project. When enhanced resistance to chemicals, corrosion, moisture, rust, or abrasion is needed, Cornell has materials and finishes that will meet or exceed the requirement.

Available Material Finishes for Steel:

Exclusive GalvaNex™ Finish for Sheet Metal Curtains & Hoods- Coating System includes an ASTM A 653 galvanized base coating treated with dual process rinsing agents in preparation of a chemical bonding, light gray baked-on polyester base coat and a light gray baked-on polyester finish coat. The scientific organic material composition and chemical bonding process of GalvaNex™ produces a superior finish against corrosion and abrasion.

Hot Dipped Galvanized - Hot liquid process applies protective zinc coating in metallic silver finish.

ZRG - Zinc Rich Gray powder coating is smoother, more uniform and more durable than solvent based ZRC Zinc Rich Coating.

Available Material Finishes for Aluminum:

Aluminum Mill Finish - Bright high-luster appearance in natural aluminum form.

Clear or Color Anodized - Electrochemical immersion process creates etched clear satin or a matte finish in deeper colors, including medium bronze, and black.

Available Material Finishes for Stainless Steel:

300 Series, #4 Finish - Brushed satin finish on curtain slats, bottom bar, hood, and guides. Stainless steel resists rust and corrosion and offers superior performance in the presence of moisture, chemicals, and food products.

Structural Stainless - Annealing pickles and toughens metal to make a rough textured matte finish.



Powder Coating:
An electrostatic applied polymer is baked-on to selected steel or aluminum components providing a durable finish in an array of color choices. Click here for detailed information on Cornell's SpectraShield® powder coating process.


Standard Finishes
Unless specified otherwise, rolling door components will be furnished with the following finishes as standard:
Curtain Slats - Exclusive GalvaNex™ finish in light gray
Hood - Exclusive GalvaNex™ finish in light gray
Endplate Brackets - SpectraShield® powder coated 30-7192 gray
Bottom Bar - SpectraShield® powder coated 30-7192 gray
Guides - SpectraShield® powder coated 30-7192 gray
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