Round duct sleeve stock.
Measure the supplied diameter and complete sleeve length, then add the prescribed seam allowance.
Read the right quantitative data
Sheet size, cut gap and the supplied lap width.
Check this ordering assumption
Cylinder area excludes a seam allowance that may push a blank beyond one stock sheet.
The seam and material specification are already selected.
A worked quantity method
This illustrative set of supplied inputs demonstrates Round Duct Sleeve Sheet Blank Calculator. Replace the example measurements and product figures with your own before ordering.
| Supplied input | Metric display | US display |
|---|---|---|
| Usable stock width | 1 m | 3.28 ft |
| Usable stock length | 2 m | 6.56 ft |
| Your reserved cutting gap | 0 m | 0 ft |
| Permitted blank orientation | Fixed orientation | Fixed orientation |
| Supplied seam extra | 0 m | 0 ft |
| Supplied extra at each end | 0 m | 0 ft |
| Measured sleeve group 1: Supplied developed sleeve diameter | 0.2 m | 0.66 ft |
| Measured sleeve group 1: Measured sleeve length | 1 m | 3.28 ft |
| Measured sleeve group 1: Identical sleeves | 2 | 2 |
Sheets for this rectangular allocation: 1 sheets
- Cut panels
- 2
- Net panel area
- 1.26 m²
- Area outside panels including cutting gaps
- 0.74 m²
Longest-side-first placement with disjoint rectangular remainder regions and reserved cutting gaps. Feasible allocation, not a guaranteed minimum or machine cutting procedure.
Open this example in the full calculatorYour measurement and product-data sheet
Record what you know and mark verified items ready. Notes save on this browser after you edit them. Download a copy before clearing browser data.
Measure the supplied diameter and complete sleeve length, then add the prescribed seam allowance.
Sheet size, cut gap and the supplied lap width.
Cylinder area excludes a seam allowance that may push a blank beyond one stock sheet.
Input for Round Duct Sleeve Sheet Blank Calculator. Record the value with its unit and quantity basis.
Input for Round Duct Sleeve Sheet Blank Calculator. Record the value with its unit and quantity basis.
Input for Round Duct Sleeve Sheet Blank Calculator. Record the value with its unit and quantity basis.
Input for Round Duct Sleeve Sheet Blank Calculator. Record the value with its unit and quantity basis. Available choices: Fixed orientation; Rotation permitted
Input for Round Duct Sleeve Sheet Blank Calculator. Record the value with its unit and quantity basis.
Input for Round Duct Sleeve Sheet Blank Calculator. Record the value with its unit and quantity basis.
Input for Round Duct Sleeve Sheet Blank Calculator. Record the value with its unit and quantity basis.
Input for Round Duct Sleeve Sheet Blank Calculator. Record the value with its unit and quantity basis.
Input for Round Duct Sleeve Sheet Blank Calculator. Record the value with its unit and quantity basis.
Choose your next calculation
Round Duct Sleeve Sheet Blank Calculator
Develop measured circular sleeves into flat rectangles using supplied seam and end extras, then preserve whole blank fit.
Mixed Rectangle Sheet Layout Calculator
Build a feasible rectangular cut allocation for different rectangular panels, respecting your rotation choice and cutting gap.
Turn the estimate into an order
- Confirm that all quantities use the same measured basis and the selected product's current data.
- Keep different products, finishes and handed variants in separate purchase lines.
- Review exact demand and whole-pack purchase quantities before entering your quoted prices.
- Record compatible stock already on hand, then save the remaining order in your browser project.
Measurement and purchase guides
Other materials in this family
Reviewed 6 October 2026. Geometry and purchase arithmetic use your measurements and selected specifications. Calculation scope.