W21X122 Dimensions & Weight
W21X122 is an AISC wide-flange (W) shape with an actual depth of 21.68 in and a 12.39 in wide flange, weighing 122 lb per foot — a size you will see on longer floor spans and transfer framing.
W21X122 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 21.68 in | 550.7 mm |
| Flange width (bf) | 12.39 in | 314.7 mm |
| Cross-section area (A) | 35.9 in² | 231.6 cm² |
| Weight | 122 lb/ft | 181.6 kg/m |
What does W21X122 cost?
At an example material price of $0.92/lb, W21X122 runs about $112 per foot, or roughly $2,245 for a 20-ft length.
Example pricing only. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.
Counting W21X122s off a drawing set by hand? SteelFlo finds every steel label on your PDF automatically — 3 takeoffs free.
Related sizes
Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight