---
title: Josam 21500-66 - Precast Concrete & Steel Roof Deck Installation
description: Installation diagram for the Josam 21500-66 roof drain into a precast concrete and steel deck.
---

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# Josam 21500-66 - Precast Concrete & Steel Roof Deck Installation

Typical installation of the Josam 21500-66 roof drain into a precast concrete and steel deck. 

### *[Download Specifications PDF](https://resources.hy-techroof.com/hubfs/Josam%2021500-AE-%7C%20Installation%20Gypsum%20Roof%20Deck.pdf)<https://hy-techroofdrains.com/%7B%7Bmedia%20url=>*

![precast.jpg](https://cdn11.bigcommerce.com/s-7wb5vs0sib/product_images/uploaded_images/precast.jpg "precast.jpg")

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