4" Steel Straight Sections

Steel Straight Sections Numbering Example:
09 - A412 - 0012 - 36 -
Bottom Type
06 - 6" Rung Spacing
09 - 9" Rung Spacing*
12 - 12" Rung Spacing
18 - 18" Rung Spacing**
VT - Ventilated/Trough
SC† - Solid Corrugated
VC† - Vented Corrugated
SF† - Solid Flat Bottom
* Standard rung spacing
** Not available for mill galvanized systems
† Not available for flange out tray 		Tray System Number
This identifies the specific tray design and is used as a product number prefix for straight sections. 		Length
0010 - 10'-0"
0012* - 12'-0"
0020† - 20'-0"
0024 - 24'-0"
* Standard for Series 1
† Standard for Series 2 		Width
06 - 6"
09 - 9"
12 - 12"
18 - 18"
24 - 24"
30 - 30"
36 - 36" 		Rung Option
Add suffix for non-standard rung.

M

Steel,
Mill galvanized

G

Steel,
Hot-dip galvanized

Click on product number to download data sheet.

Rail Height Load Depth Rail Flange* NEMA Class CSA Class Tray System Number Amp Rating Safe Load Data (LBS./FT.)
Support Span (FT.) / Deflection (IN.)
6 8 10 12 14 16 18 20 22 24 26 28 30
4" 3" 1" 12C, 16A D, 3M A457 A412 B457 100 439 0.31 250 0.55 160 0.86 111 1.24 78 1.61 58 2.06                            
1 3/4" 20A, 16B - 1D80 1D81 B417 200 439 0.20 338 0.51 216 0.79 150 1.14 110 1.55 84 2.02 67 2.56 54 3.16 44 3.74 34 4.07            
20B, 16C D, 6M 1D82 1D83 B418 400 439 0.16 439 0.50 312 0.88 217 1.26 159 1.72 122 2.25 96 2.84 78 3.51 63 4.18 52 4.87            
20C E, 6M 1D69 1D70 B419 400     439 0.39 400 0.87 278 1.25 204 1.70 156 2.21 123 2.80 100 3.46 81 4.09 66 4.77            

Connectors & Fittings:

Necessary connectors and fasteners are supplied with all trays and fittings. Extra connectors for field cuts or spares must be ordered separately.

Safe Load:

Allowable cable load in pounds per linear foot uniformly distributed. Based on tray with standard rung on 9" centers and supported on simple beam with safety factor of 1.5 per NEMA VE1.

Concentrated Load:

All ladders with solid rungs and trays with corrugated bottoms will support a 200 lb. concentrated load applied at the center of the tray in addition to the NEMA -rated cable load without collapse (except NEMA Class 12A trays).

*Rail flange size determines which series connectors are needed. Please consult the chart above to determine the connectors you need.

SERIES 1

Fitting side rails have 2" tangents (flat portion beyond curvature) at the end of each fitting, to accommodate splice plates with four holes.

SERIES 2

Fitting side rails have 5" tangents at the end of each fitting, to accommodate splice plates with eight holes.