--- title: Zurn Z100-FG Roof Drain | Flush Grate description: Find product diagram and engineering specifications for the Zurn Z100-FG Roof Drain with Flush Grate. --- Search our inventory of drains, drain parts, safety and roofing equipment, and accessories. [Shop Now](https://hy-techroof.com/products/). - [ About ](https://www.hy-techroof.com/about-hy-tech/) - [ Contact ](https://www.hy-techroof.com/contact-hy-tech/) - - [![Hy-Tech Roof Products](https://resources.hy-techroof.com/hubfs/Logos/Hy-Tech%20Logo_rgb_maroon_480.png) ](https://www.hy-techroof.com) [**](https://www.hy-techroof.com/login.php) [**](https://www.hy-techroof.com/cart.php) ** ** [![Hy-Tech Roof Products](https://resources.hy-techroof.com/hubfs/Logos/Hy-Tech%20Logo_rgb_maroon_480.png) ](https://www.hy-techroof.com) [**](https://www.hy-techroof.com/cart.php) - - # Zurn Z100-FG Roof Drain | Flush Grate *Dimensional data is subject to manufacturing tolerances and change without notice.*   ### **![z100-fg](https://resources.hy-techroof.com/hs-fs/hubfs/z100-fg.webp?width=342&name=z100-fg.webp)** **Specifications: **Zurn Z100-FG roof drain includes a dura-coated cast iron (DCCI) body with combination membrane flashing clamp / gravel guard and flush grate.  | **Pipe Size (in.)** | **Approx Weight (lbs)** | **Dome Open Area (sq in.)** | | --- | --- | --- | | 2-4 | 26 | 32 | | 5, 6 | 27 | 32 | | 8 | 28 | 32 | ### Outlet Types | **Outlet Type** | **Available Pipe Sizes (in.)** | **Body Height Dimension (E)** | | --- | --- | --- | | Inside Caulk (IC) | 2 - 6, 8 | 5 1/4 in. | | Threaded (IP) | 2 - 6, 8 | 3 3/4 in. | | No-Hub (NH) | 2 - 6, 8 | 5 1/4 in. | | Neo-Loc (NL) | 2 - 4 | 4 9/16 in. | | Neo-Loc (NL) | 6 | 5 7/16 in. |   ### Dome Options - Grate* with DCCI Body (Z) **Regularly furnished unless otherwise specified.* ### Accessories - Angular Underdeck Clamp (-AC) - Adjustable Extension Assembly (2 1/8 - 3 1/2 in.) (-EA) - Acid Resistant Epoxy Coated (-AR) - Top-Set Adjustable Extension Assembly (-EB) - Underdeck Clamp (-C) - Galvanized Cast Iron (-G) - Deck Extension (-DE) - Roof Sump Receiver (-R) - Top-Set Deck Plate (Replaces both the -C and -R) (-DP) - Neo-Loc Test Cap Gasket (2 - 4 in.; NL bottom outlet only) (-TC) - Top-Set Drain Riser (-DR) - Vandal-Proof Secured Top (-VP) - Dex-o-Tex Flange (-DX) - Stainless Steel Perforated Gravel Guard (-84) - Static Extension (1 - 4-in.; specify height) (-E) - 90° Threaded Side Outlet Body (2 - 6 in.) (-90) - [Drains](https://www.hy-techroof.com/products/drains/) - [Zurn](https://www.hy-techroof.com/manufacturers/zurn/) - [Smith](https://www.hy-techroof.com/manufacturers/j-r-smith/) - [Josam](https://www.hy-techroof.com/manufacturers/josam/) - [Wade](https://www.hy-techroof.com/manufacturers/wade/) - [Marathon](https://www.hy-techroof.com/manufacturers/marathon/) - [Olympic](https://www.hy-techroof.com/manufacturers/olympic/) - [Equipment](https://www.hy-techroof.com/products/equipment) - [Garlock](https://www.hy-techroof.com/manufacturers/garlock/) - [Leister](https://www.hy-techroof.com/manufacturers/leister/) - [All Seasons / Grizzly](https://www.hy-techroof.com/manufacturers/all-seasons-equipment/) - [Hennes-Johnson](https://www.hy-techroof.com/manufacturers/hennes-johnson/) - [Gator](https://www.hy-techroof.com/manufacturers/gator-roofing-equipment/) - [Roofmaster](https://www.hy-techroof.com/manufacturers/roofmaster-products-company/) - [Safety](https://www.hy-techroof.com/products/safety) - [Leading Edge](https://www.hy-techroof.com/manufacturers/leading-edge-safety/) - [Tie Down Manufacturing Ingenuity](https://www.hy-techroof.com/manufacturers/tie-down-manufacturing-ingenuity/) - [Malta Dynamics](https://www.hy-techroof.com/manufacturers/malta-dynamics/) - [Resources](https://resources.hy-techroof.com) - [Account](https://www.hy-techroof.com/login.php) - [The Drain Wizard](https://resources.hy-techroof.com/ask-the-drain-wizard) - [FAQ](https://resources.hy-techroof.com/faq) - [Blog](https://resources.hy-techroof.com/blog) - [Roof Drain Specs](https://resources.hy-techroof.com/roof-drain-specs-and-diagrams) - [Video Library](https://resources.hy-techroof.com/video-library) - [About](https://www.hy-techroof.com/about-hy-tech/) - [Contact Us](https://www.hy-techroof.com/contact-hy-tech/) - [About Hy-Tech](https://www.hy-techroof.com/about-hy-tech/) - [Service and Repairs](https://www.hy-techroof.com/service-and-repairs/) [800-635-0384](tel:8006350384) **Hy-Tech Products **10035 Broadview Road, Broadview Heights, OH 44147 [info@hy-techroof.com](mailto:info@hy-techroof.com) [800-635-0384](tel:8006350384) **Hy-Tech Products **10035 Broadview Road, Broadview Heights, OH 44147 [info@hy-techroof.com](mailto:info@hy-techroof.com) © 2026 Hy-Tech Products, Inc. All rights reserved. [ Terms of Use ](https://resources.hy-techroof.com/terms) - -