NATIONAL PRODUCTS
National Protection
RUST PROOF-ACID PROOF
A
SHERARDIZED surface absolutely protects against rust. By the sherardizing process, the zinc is not merely applied as an enamel to the surface, but is alloyed with the steel and becomes a part of it. And more than that,
the interior surface is given the same superior zinc protective treatment as the exterior.
A clear acid and alkali proof enamel is then baked on the Sherarduct and affords the best protection to the underlying surfaces against the destructive action of gases and acids. This enamel coating is also applied to the interior surface.
Both surfaces of Sherarduct are sherardized and enameled. National” Protection is Double Protection. Write for Descriptive Bulletin No. 50.
National Metal Molding Co
111 Fulton Building, Pittsburgh, Pa.
Atlanta Buffalo Chicago Denver Havana New York Philidelphia Salt Lake City Seattle
Boston Buenos Aires Dallas Detroit Los Angeles Paris Portland San Francisco St. Louis
Manila
CANADIAN DISTRIBUTORS: CANADIAN GENERAL ELECTRIC CO., LIMITED519
FLEXSTEEL
Distinctive flat surface. Easy to fish, cut and strip. Ideal for wiring either old or new buildings. A complete line of improved fittings
Write for Bulletin 201
SHERARDUCT
The Rigid Steel Conduit with both surfaces Sherardized and Enameled.
ECONOMY Black Enameled Conduit. There’s none better
Write for Bulletin SO
National”
METAL MOLDINGS
For two, three and four wire surface wiring. Lowest installation cost of any metal wiring system.
Write for Bulletin 101
FLEXTUBE
Interwoven — Seamless — Non-Collapsible. Inseparable and Double Compounded. Easy to fish and every foot of every coil can be used
Write for Bulletin 151
National”
Outlet Boxes and Covers A box for every purpose and a purpose for every box. Furnished in Sherard:zed or Black Enameled Finish.
Write for Bulletin 250
National”
BRACKETS
Complete with insulators. Sherardized Bases. Wires run straight through. No T e-Wires necessary.
Write for Bulletin 602
National” FIXTURE STUDS
Sherardized Stamped Steel. Hollow Stems. Stronger, and yet lighter, than any other stud on the market.
Write for Bulletin 400
Nalional”
Locknuts and Bushings Threads sharp, clean and true. “NationaP’quality products. Exclusive self-clean ng-feature in the bush ngs.
Write for Bulletin 350
National Protection
RUST PROOF-ACID PROOF
A
SHERARDIZED surface absolutely protects against rust. By the sherardizing process, the zinc is not merely applied as an enamel to the surface, but is alloyed with the steel and becomes a part of it. And more than that,
the interior surface is given the same superior zinc protective treatment as the exterior.
A clear acid and alkali proof enamel is then baked on the Sherarduct and affords the best protection to the underlying surfaces against the destructive action of gases and acids. This enamel coating is also applied to the interior surface.
Both surfaces of Sherarduct are sherardized and enameled. National” Protection is Double Protection. Write for Descriptive Bulletin No. 50.
National Metal Molding Co
111 Fulton Building, Pittsburgh, Pa.
Atlanta Buffalo Chicago Denver Havana New York Philidelphia Salt Lake City Seattle
Boston Buenos Aires Dallas Detroit Los Angeles Paris Portland San Francisco St. Louis
Manila
CANADIAN DISTRIBUTORS: CANADIAN GENERAL ELECTRIC CO., LIMITED519
FLEXSTEEL
Distinctive flat surface. Easy to fish, cut and strip. Ideal for wiring either old or new buildings. A complete line of improved fittings
Write for Bulletin 201
SHERARDUCT
The Rigid Steel Conduit with both surfaces Sherardized and Enameled.
ECONOMY Black Enameled Conduit. There’s none better
Write for Bulletin SO
National”
METAL MOLDINGS
For two, three and four wire surface wiring. Lowest installation cost of any metal wiring system.
Write for Bulletin 101
FLEXTUBE
Interwoven — Seamless — Non-Collapsible. Inseparable and Double Compounded. Easy to fish and every foot of every coil can be used
Write for Bulletin 151
National”
Outlet Boxes and Covers A box for every purpose and a purpose for every box. Furnished in Sherard:zed or Black Enameled Finish.
Write for Bulletin 250
National”
BRACKETS
Complete with insulators. Sherardized Bases. Wires run straight through. No T e-Wires necessary.
Write for Bulletin 602
National” FIXTURE STUDS
Sherardized Stamped Steel. Hollow Stems. Stronger, and yet lighter, than any other stud on the market.
Write for Bulletin 400
Nalional”
Locknuts and Bushings Threads sharp, clean and true. “NationaP’quality products. Exclusive self-clean ng-feature in the bush ngs.
Write for Bulletin 350