C9X20 Dimensions & Weight

C9X20 is an AISC American Standard channel with an actual depth of 9 in and a 2.6 in flange, weighing 20 lb per foot — commonly used for stair stringers, lintels, trimmers, and edge framing. It is the heaviest of the 3 C9 sizes listed here.

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C9X20 Dimensions

Property	Imperial	Metric
Depth (d)	9 in	228.6 mm
Flange width (bf)	2.65 in	67.3 mm
Cross-section area (A)	5.88 in²	37.9 cm²
Weight	20 lb/ft	29.8 kg/m

Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.

What does C9X20 weigh and cost?

C9X20 weighs 20 lb per foot. At an example material price of $0.92/lb that is about $18.40 per foot. Set your quantity, length, and price to total your own run:

QtyLength (ft)$ / lb

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Total weight

400 lbs

Material cost

$368.00

Material only, example pricing. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.

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