| BASIC SHAPE STYLE | CHANNEL |
| BASE FLANGE THICKNESS | 0.320 INCHES NOMINAL |
| FABRICATION METHOD | EXTRUDED |
| FILLET RADIUS WHERE LEFT FLANGE JOINS BASE FLANGE | 0.280 INCHES NOMINAL |
| FILLET RADIUS WHERE RIGHT FLANGE JOINS BASE FLANGE | 0.280 INCHES NOMINAL |
| FIRST TIP RADIUS | 0.110 INCHES NOMINAL |
| FIRST TIP STYLE | RIGHT QUARTER RADIUS |
| HEAT TREATMENT | H-111 STRAIN HARDENED |
| LEFT FLANGE THICKNESS AT BASE | 0.413 INCHES NOMINAL |
| LEFT OUTSIDE ANGLE | 90.0 DEGREES NOMINAL |
| LEFT SIDE FLANGE HEIGHT | 1.720 INCHES NOMINAL |
| LEFT SIDE FLANGE THICKNESS | 0.180 INCHES NOMINAL |
| LENGTH | 20.000 FEET MINIMUM AND 30.000 FEET MAXIMUM |
| OVERALL WIDTH | 4.000 INCHES NOMINAL |
| MATERIAL | ALUMINUM ALLOY 5086 |
| NONDEFINITIVE SPEC/STD DATA | H111 TEMPER |
| RIGHT FLANGE THICKNESS AT BASE | 0.413 INCHES NOMINAL |
| RIGHT OUTSIDE ANGLE | 90.0 DEGREES NOMINAL |
| RIGHT SIDE FLANGE HEIGHT | 1.720 INCHES NOMINAL |
| RIGHT SIDE FLANGE THICKNESS | 0.180 INCHES NOMINAL |
| SECOND TIP RELATIONSHIP TO FIRST TIP | NOT IDENTICAL |
| SECOND TIP RADIUS | 0.110 INCHES NOMINAL |
| SECOND TIP STYLE | LEFT QUARTER RADIUS |
| WEIGHT PER UNIT MEASURE | 2.580 POUNDS PER LINEAR FOOT |