Calculate size for round or rectangular ductwork. Adjust airflow, diameter, width, or height using sliders. Enter values directly for precise measurements. Lock friction calculations for accurate results.
by Pheinex, LLC★ 4.5189 ratingsUtilities$19.99Data updated 2026-09-10
Calculate airflow displacement by inputting velocity or volume. Select duct type and dimensions with unit options. Instantly display results in preferred units including fl/min, m/s, and ft3/min.
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Calculate duct sizes based on airflow requirements and space constraints. Input dimensions and airflow rates. Generate reports with material estimates and installation guidelines. Export data for sharing or record-keeping.
Add grids to images with 5 types including rectangle and square options. Customize lines with RGB colors. Adjust rows and columns or set row height and column width. Export edited images.
SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC.
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