---
title: Engineering Specifications
description: Our extensive system engineering specifications offer in-depth guidance on installation requirements, common applications, and the assembly of components.
---
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3. [20 - Engineering Specifications](https://helpcenter.unicosystem.com/knowledge/technical-specifications?hsLang=en#20-engineering-specifications)
# Engineering Specifications
## Our extensive system engineering specifications offer in-depth guidance on installation requirements, common applications, and the assembly of components.
| **BULLETIN NUMBER** | **TITLE** | **DATE PUBLISHED** |
| --- | --- | --- |
| [Bulletin 20-011](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-011.pdf?hsLang=en) | Modular Air Handler Specifications (M2430, M3036, M4860) | July 2023 |
| [Bulletin 20-011 (UK)](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-011%20(UK).pdf?hsLang=en) | Modular Air Handler Specifications (M2430, M3036, M4860) | July 2023 |
| [Bulletin 20-015](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-015.pdf?hsLang=en) | System Component Specifications (Accessories) | December 2016 |
| [Bulletin 20-019](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-019.pdf?hsLang=en) | Vertical Air Handler Specifications | April 2020 |
| [Bulletin 20-019 (UK)](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-019%20(UK).pdf?hsLang=en) | Vertical Air Handler Specifications | April 2020 |
| [Bulletin 20-020.1](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-020.1.pdf?hsLang=en) | M Series Blower Module Specifications | August 2021 |
| [Bulletin 20-020.1 (UK)](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-020.1%20(UK).pdf?hsLang=en) | M Series Blower Module Specifications | April 2020 |
| [Bulletin 20-020.2](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-020.2.pdf?hsLang=en) | M Series Refrigerant Coil Module | June 2026 |
| [Bulletin 20-020.3](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-020.3.pdf?hsLang=en) | M Series Chilled Water Coil Module | January 2019 |
| [Bulletin 20-020.4](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-020.4.pdf?hsLang=en) | M Series Heating Module | December 2018 |
| [Bulletin 20-020.5](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-020.5.pdf?hsLang=en) | Vertical Plenum Module | April 2018 |
| [Bulletin 20-020.6](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-020.6.pdf?hsLang=en) | Return Plenum Module | October 2012 |
| [Bulletin 20-020.7](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-020.7.pdf?hsLang=en) | Adapter, Supply Plenum | March 2019 |
| [Bulletin 20-025](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-025.pdf?hsLang=en) | Electric Duct Furnace | April 2015 |
| [Bulletin 20-034](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-034.pdf?hsLang=en) | Return Air Adapters | March 2023 |
| **[Bulletin 20-040](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-040.pdf?hsLang=en)** | **Blower Curves** | **August 2007** |
| [Bulletin 20-054](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-054.pdf?hsLang=en) | Supply and Sound Attenuator Duct | February 2023 |
| [Bulletin 20-056](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-056.pdf?hsLang=en) | Outlet Kits | April 2018 |
| [Bulletin 20-058](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-058.pdf?hsLang=en) | Slotted Outlet Plenum Takeoff Kit | June 2007 |
| [Bulletin 20-060](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-060.pdf?hsLang=en) | Rigid Sound Attenuator | April 2018 |
| [Bulletin 20-065](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-065.pdf?hsLang=en) | Round Outlets | January 2023 |
| [Bulletin 20-066](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-066.pdf?hsLang=en) | UL-555C Fire-Rated Outlet | March 2009 |
| [Bulletin 20-068](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-068.pdf?hsLang=en) | Twist Fit System Outlet Kits (UPC-89T) | May 2020 |
| [Bulletin 20-070](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-070.pdf?hsLang=en) | Slotted Outlet | April 2021 |
| [Bulletin 20-080](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-080.pdf?hsLang=en) | Plaster Frame Kit | October 2019 |
| [Bulletin 20-081](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-081.pdf?hsLang=en) | Outlet Screens | April 2018 |
| [Bulletin 20-083](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-083.pdf?hsLang=en) | Condensate U-trap | April 2021 |
| [Bulletin 20-085](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-085.pdf?hsLang=en) | Mild Weather Control Kit | August 2006 |
| [Bulletin 20-090](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-090.pdf?hsLang=en) | Unico Thermostats | October 2023 |
| [Bulletin 20-100](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-100.pdf?hsLang=en) | Sample Specification | October 2013 |
| **Bulletin 20-110** | **Engineering Drawing Request Form** | **July 2004** |
| [Bulletin 20-132](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-132.pdf?hsLang=en) | UV Light Module Specifications | June 2020 |
| [Bulletin 20-133](https://helpcenter.unicosystem.com/hubfs/Product%20Manual%20(Bulletins)/20%20-%20Technical%20Specifications/Bulletin%2020-133.pdf?hsLang=en) | Air Filter Specifications | August 2020 |
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