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Hvac Duct Size

HVAC duct sizing calculator: any two of duct size (round or rectangular), airflow, velocity and friction rate. Round and rectangular equivalents, nearest standard sizes, friction loss per 100 ft (Darcy-Weisbach, Colebrook), velocity pressure, design checks. Equal-friction sizing, fixed-depth ducts, IP or SI. Shows every step with the numbers. $0.002 USDC per call.

POST https://x402-agent-api.onrender.com/api/v1/hvac-duct-size

0.002 USDC on Base · payTo 0x6847231bD28E16A0A57c59793f6B8BD8CC0043aC

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