Intry Verified receipt
Is the Intry Round to Rectangular Duct Converter accurate?
The provenance receipt for the Intry Round to Rectangular Duct Converter: the exact authority its values derive from, the edition they are keyed to, who has final say, and what our automated checks hold them against, rebuilt from their cited source.
Short answer: Every figure an Intry calculator computes comes from a locked source module, not hand-typed. 27852 automated checks re-derive and source-check the numbers against the ASHRAE Fundamentals equivalent-diameter standard it was computed from before each deploy. This is our own deterministic gate, not a third-party audit. The per-tool receipt is public at https://www.intrysys.com/verified.
The receipt
- Calculated from
- ASHRAE Fundamentals 21.3.1 equivalent diameter (Huebscher) · Standard manufactured duct sizes (McGill AirFlow / SMACNA). Reused verbatim from the locked engine, never re-written for this page.
- Checked
- Before any release, an automated check rebuilds the calculated figures from the locked engine that produces them and holds each one against the source it cites, so a number answers to its source and not merely to itself. As of the current build that suite holds 27852 checks, and this page has to clear them too. This is our own deterministic gate, not a third-party audit.
- Runnable
- A reference engine behind the published numbers on this site. Runnable access is offered on the calculators exposed at the Intry MCP endpoint.
- Final say
- A full ACCA Manual D duct design has final say; confirm the shape fits the space.
Frequently Asked Questions
Is the Intry Round to Rectangular Duct Converter accurate?
Every figure an Intry calculator computes comes from a locked source module, not hand-typed. 27852 automated checks re-derive and source-check the numbers against the ASHRAE Fundamentals equivalent-diameter standard it was computed from before each deploy. This is our own deterministic gate, not a third-party audit. The per-tool receipt is public at https://www.intrysys.com/verified.