--- title: Zurn Z100-85 Roof Drain Stainless Steel Perforated Extension description: Find product diagram and engineering specifications for the Zurn Z100-85 Roof Drain with stainless steel perforated extension. --- 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 Z100-85 Roof Drain Stainless Steel Perforated Extension *Dimensional data is subject to manufacturing tolerances and change without notice.*   ### **![z-100-85-pe](https://resources.hy-techroof.com/hs-fs/hubfs/z-100-85-pe.webp?width=318&name=z-100-85-pe.webp)** **Specifications: **Zurn Z100-85 roof drain includes a dura-coated cast iron (DCCI) body with combination membrane flashing clamp / gravel guard, perforated extension (18 ga.) and low-silhouette poly-dome strainer. | **Pipe Size (in.)** | **Approx Weight (lbs)** | **Dome Open Area (sq in.)** | | --- | --- | --- | | 2 - 4 | 28 | 103 | | 5 - 6 | 29 | 103 | | 8 | 30 | 103 | [![image of blue zurn roof drain with text "zurn roof drains & replacement parts find and buy online"](https://no-cache.hubspot.com/cta/default/10783/dd59a7a6-a93c-475e-a021-79d328357d56.png)](https://cta-redirect.hubspot.com/cta/redirect/10783/dd59a7a6-a93c-475e-a021-79d328357d56) ### 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 5/8 in. |   ### Dome Options - Poly-Dome* with DCCI Body (Z) - 6-3/4 In. High Aluminum Dome with DCCI Body (ZA) - Cast Iron Dome with DCCI Body (ZC) - Plain Bronze Dome with DCCI Body (ZRB) **Regularly furnished unless otherwise specified.* ### Accessories - Angular Underdeck Clamp (-AC) - Galvanized Cast Iron (-G) - Acid Resistant Epoxy Coated (-AR) - Galvanized Cast Iron Dome (ZC only) (-GD) - Bronze Mesh Screen Over Dome (-BS) - 6 3/4 in. High Aluminum Dome (148 sq. in. open area) (-HD) - Underdeck Clamp (-C) - Roof Sump Receiver (-R) - Top-Set Roof Deck Plate (-DR) - Stainless Mesh Screen Over Dome (-SS) - Static Extension (1 - 4-in.; specify height) (-E) - Vandal-Proof Secured Top (-VP) - Adjustable Extension Assembly (1 3/4 - 3 1/2 in.) (-EA) - Vertical Expansion Joint (-XJ) - Flush Grate (Replaces Dome Strainer) (-FG) - 90° Threaded Side Outlet Body (2 - 6 in.) 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