W21X166 Dimensions & Weight

W21X166 is an AISC wide-flange (W) shape with an actual depth of 22.5 in and a 12.42 in wide flange, weighing 166 lb per foot — a size you will see on longer floor spans and transfer framing.

W21X166 Dimensions

Property	Imperial	Metric
Depth (d)	22.5 in	571.5 mm
Flange width (bf)	12.42 in	315.5 mm
Cross-section area (A)	48.8 in²	314.8 cm²
Weight	166 lb/ft	247 kg/m

What does W21X166 cost?

At an example material price of $0.92/lb, W21X166 runs about $153 per foot, or roughly $3,054 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 W21X166s off a drawing set by hand? SteelFlo finds every steel label on your PDF automatically — 3 takeoffs free.

Related sizes

W21X4444 lb/ft
W21X4848 lb/ft
W21X5050 lb/ft
W21X5555 lb/ft
W21X5757 lb/ft
W21X6262 lb/ft
W21X6868 lb/ft
W21X7373 lb/ft

Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight