RHS 180x80x4 Dimensions & Weight
RHS 180x80x4 is a rectangular hollow section to EN 10210 / EN 10219, 180 x 80 mm outside with a 4 mm wall, weighing 15.5 kg per metre (10.42 lb/ft) — commonly specified for columns, braces, and exposed architectural steel. It is the lightest of the 5 RHS 180x80 sizes listed here.
RHS 180x80x4 Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Outside depth | 180 mm | 7.087 in |
| Outside width | 80 mm | 3.15 in |
| Wall thickness | 4 mm | 0.157 in |
| Cross-section area (A)computed from weight and steel density | 19.7 cm² | 3.05 in² |
| Mass | 15.5 kg/m | 10.42 lb/ft |
Standard: EN 10210 / EN 10219. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does RHS 180x80x4 weigh and cost?
RHS 180x80x4 has a mass of 15.5 kg per metre. At an example material price of 2.00 per kg (in your currency) that is about 31.00 per metre. Set your quantity, length, and price to total your own run:
Material only, example pricing (same currency as the price you enter). Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.
Pricing more than one size? Build a full member list in the free calculator →
Stop counting RHS 180x80x4s by hand.
Upload your drawing set and SteelFlo puts a box on every steel label it finds — every RHS 180x80x4, on every page — ready to review and export as a bill of materials.
Related sizes
Deeper reading: UK UB & UC Sizes Chart · How to calculate steel weight