P1003 - 1 5/8" x 1 5/8", 12 Gauge, With 4 1/32" Wide Plate
P1003 - 1 5/8" x 1 5/8", 12 Gauge, With 4 1/32" Wide Plate


P1003 - 1 5/8" x 1 5/8", 12 Gauge, With 4 1/32" Wide Plate

Sale price$0.00 Regular price$43.18
Sold out
Finish:Pregalvanized Zinc



Some cutting jobs allow us to use ground shipping rather than LTL, yielding significant freight savings. A customer service associate will contact you to confirm the cut list and shipping and freight costs prior to finalizing your order. eg - 4 cuts per stick x 5ft per section

12 Gauge Welded Strut Channel with Plate P1003 is the original metal framing strut channel and has been used in countless applications for over 90 years. Commonly known as 12 gauge standard or deep strut channel, it is the global standard for strut metal framing.


  • Panel support
  • Product dimensions are 1 5/8" wide x 1 5/8" tall x 12 ga. thick, with a 4 1/32' wide plate.
  • Punched holes are also available for ease of installation.
  • Ceiling grids
  • Made in the USA

Brands Available:

  • Unistrut


Elements of Section

Elements of Section - P1003
Area of Section 0.979 in2 (6.3 cm2)
Axis 1-1 Axix 2-2
Moment of Inertia (I) 0.287 in4 (11.9 cm4) 0.617 in4 (25.7 cm4)
Section Modulus (S) 0.248 in3 (4.1 cm3) 0.290 in3 (4.8 cm3)
Radius of Gyration (r) 0.576 in (1.5 cm) 0.909 in (2.3 cm)

General Specifications

Standard Lengths:

  • 10 feet:  10' or 10’ 1/8” (3.05m) ± 1/8" (3 mm)
  • 20 feet:  20' or 20’ 3/8” (6.11m) ± 1/8" (3 mm)

Special Lengths:

Curved Channel:

  • Many Unistrut channel sections can be supplied with a curve. Click here for our ordering form, specifications, and instructions.

Load Data:


  • All beam and column load data pertains to carbon steel and stainless steel channels.
  • Load tables apply only to UNISTRUT brand channel. Look for "UNISTRUT" on the product.
  • Load tables and charts are constructed to be in accordance with the SPECIFICATION FOR THE DESIGN OF COLD-FORMED STEEL STRUCTURAL MEMBERS 2007 EDITION published by the AMERICAN IRON AND STEEL INSTITUTE USING ASD METHOD.
  • Loads are based on 33 ksi steel cold formed to 42 ksi.
  • Safety Factor to Yield Strength is 1.67 for Beam Loads and 1.80 for Column Loads.
  • Beam loads are based on a simple beam and are given as a total uniform load (W) in pounds. For proper calculation procedures, refer to our Beam Load Calculation Guide under Resources.
  • For bearing loads, reference our bearing loads page.


  • Welded channels are spot welded 2" (51 mm) or 3" (76 mm) on-center. 


Materials & Finishes

Materials & Finishes - Standard:

  • Pregalvanized (PG):  Conforms to ASTM A653 SS GR 33, G90.
  • Unistrut Defender (DF):  Conforms to ASTM A1046 SS GR 33
  • Hot Dip Galvanized (HG):  Steel conforms to ASTM A1011 SS GR 33, Finish conforms to ASTM A123
  • Perma-Green (GR):  Steel conforms to ASTM A1011 SS GR 33, E-Coat finish
  • Perma-Gold (ZD):  Steel conforms to ASTM A1011 SS GR 33, Finish conforms to ASTM B633, Type II SC3
  • Plain (PL):  Conforms to ASTM A1011 SS GR 33
Materials & Finishes - Special Metals:
  • Stainless Steel, Type 304 (SS):  ASTM A240, Type 304 *
  • Stainless Steel, Type 316 (ST):  ASTM A240, Type 316 *
  • Aluminum (EA):  ASTM B221, Type 6063-T6 (Extruded) *

* These materials have different physical properties and performance characteristics. Please contact us for design support.