Free symbol library
Free ductwork & air device symbols for Bluebeam & PDF plans
The ductwork legend for mechanical plans — supply, return, exhaust, round and oval sections, lined and flexible duct, volume, smoke, fire/smoke and backdraft dampers, turning vanes, registers, louvers, duct rise and drop, inline fan, mixing box and plenum. Download the Bluebeam tool set, or draw a layout in Notch.
- 24 vector symbols
- Free for commercial use
- Imports into Revu 20 and 21
How it works
1
Download the tool set
Enter an email and the .btx downloads — every symbol in the set, drawn as clean vectors.
2
Import into Bluebeam
Tool Chest → Manage Tool Sets → Import. The set appears as its own tab, ready to drop onto any sheet.
3
Or skip the import
Open a symbol in Notch and it's already a tool — live vectors that size to the sheet's scale, on any device, no install.
Frequently asked questions
- How do I import the ductwork tool set into Bluebeam Revu?
- Download the .btx file, open Bluebeam Revu, go to Tool Chest → Manage Tool Sets (the gear icon) → Import, and pick the file. The set appears in your Tool Chest ready to drop onto any PDF.
- How do I draw the duct runs themselves?
- Sections and devices are point symbols. For the runs, Notch's Systems library has a Duct tool that draws two parallel duct walls with SA / RA / EA labels along the run — open any symbol in Notch to find it alongside.
- Are these free for commercial use?
- Yes. Every set is free to download and use on any project, commercial included. Enter an email and the file is yours — we send occasional Notch updates, unsubscribe anytime.
- How are these different from the symbols in Notch?
- Every symbol here is a built-in tool in Notch, drawn as live vectors rather than a pasted image — recolour it, resize it, rotate it, and it drops at true size on a calibrated sheet. Click Open in Notch on any symbol to try it on a real drawing, no account needed.
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