---
product_id: 25509747
title: "OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit for 8/10-Inch Joists"
brand: "os&b"
price: "36828 kr"
currency: ISK
in_stock: true
category: "Os&B"
url: https://www.desertcart.is/products/25509747-os-and-b-itd35-two-piece-abs-island-tub-drain
store_origin: IS
region: Iceland
---

# Snap-off test cap rated to 30 PSI for water/air/smoke testing Fits 8/10-inch joists with low-profile asymmetrical deck Two-piece ABS design for easy install OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit for 8/10-Inch Joists

**Brand:** os&b
**Price:** 36828 kr
**Availability:** ✅ In Stock

## Summary

> 🚿 Upgrade your tub drain game—install smarter, test easier, last longer!

## Quick Answers

- **What is this?** OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit for 8/10-Inch Joists by os&b
- **How much does it cost?** 36828 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/25509747-os-and-b-itd35-two-piece-abs-island-tub-drain)

## Best For

- os&b enthusiasts

## Why This Product

- Trusted os&b brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Durable PVC body ensures long-lasting performance under finished floors
- • **Space-Savvy Design:** Asymmetrical deck plate fits tight layouts and freestanding faucets without interference
- • **Test with Confidence:** Snap-off cap supports 30 PSI water, air, and smoke testing before final setup
- • **Effortless Remodel Ready:** Two-piece ABS kit includes all components for seamless bathroom upgrades
- • **Complete Installation Kit:** Includes brass tailpiece, PVC adapters, mortar guard, and cutting template for precision

## Overview

The OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit is engineered for professional-grade bathroom remodels, fitting standard 8/10-inch joists with a low-profile asymmetrical deck plate. Its durable PVC construction supports freestanding tub installations over finished floors, while the snap-off test cap enables reliable 30 PSI water, air, and smoke testing. This comprehensive kit includes all necessary components for a precise, hassle-free installation, making it a top choice for modern bathroom projects.

## Description

OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit for 8/10-Inch Joists | Asymmetrical Deck Plate Fits Confined Layouts and The Snap-Off Cap Supports 30 PSI Water, Air, or Smoke Testing Before Setup - desertcart.com

## Features

- EASY INSTALLATION: Make bathroom remodels simpler with the Two Piece PVC Island Tub Drain Rough-in from OS&B. Supplied with all the necessary components to ensure seamless installation, it is the perfect combination of convenience and functionality.
- LOW-PROFILE DESIGN: Crafted with an asymmetrical deck plate, this tub drain kit will not interfere with a freestanding faucet rough-in. Easier installation in tight areas or small bathrooms: install in an 8"/10" joist space with a 1-1/2"/2" P-trap or slab on grade construction or wooden sub flooring.
- BUILT TO LAST: The tub drain kit features a PVC body for durability. Enabling the freestanding tub location to be defined at rough-in (install before tiling), it allows for tub fitting over a finished floor (access below the fixture is not needed).
- TESTABLE DESIGN: Built with a snap-off test cap (rated to 30 psi), it enables water, air, and smoke testing. The bathtub drain has a 2" DWV hub connection, while the epoxy-coated, 18-gauge metal deck flange features holes to lock in thinnest.
- FULL BATHTUB DRAIN KIT: This tub drain kit includes a flanged brass tailpiece, a PVC adapter kit (that helps attach to PVC bath wastes), a 2" x 1-1/2" PVC reducing bushing, a mortar/tile guard, an island drain assembly, and a cutting template for the rough-in.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B016M16DTC |
| Best Sellers Rank | #80,724 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #111 in Bathtub Drains |
| Color | Black & Red |
| Customer Reviews | 4.7 4.7 out of 5 stars (807) |
| Date First Available | October 12, 2015 |
| Finish | ABS |
| Included Components | Rough-in Kit |
| Installation Method | Freestanding |
| Item Package Quantity | 1 |
| Item Weight | 2.09 pounds |
| Item model number | ITD35 |
| Manufacturer | Oakville Stamping and Bending Ltd. |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Part Number | ITD35 |
| Product Dimensions | 9.38 x 9.38 x 4.13 inches |
| Style | ITD35 - ABS |

## Product Details

- **Brand:** OS&B
- **Global Trade Identification Number:** 00775439064526
- **Manufacturer:** Oakville Stamping and Bending Ltd.
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Maximum Pressure:** 30 psi
- **Outside Diameter:** 2 inches
- **UPC:** 775439064526
- **Unit Count:** 1 Count

## Images

![OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit for 8/10-Inch Joists - Image 1](https://m.media-amazon.com/images/I/61XZuFB+e3L.jpg)
![OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit for 8/10-Inch Joists - Image 2](https://m.media-amazon.com/images/I/41qIqtBiYQL.jpg)
![OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit for 8/10-Inch Joists - Image 3](https://m.media-amazon.com/images/I/51gWBC38VFL.jpg)
![OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit for 8/10-Inch Joists - Image 4](https://m.media-amazon.com/images/I/51toYM4Zu7L.jpg)
![OS&B ITD35 Two-Piece ABS Island Tub Drain Rough-In Kit for 8/10-Inch Joists - Image 5](https://m.media-amazon.com/images/I/41-6d-lTiPL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: What diameter is top mount where screws go in?**
A: That’s a good question. I can’t remember the exact measurement but it’s somewhere around 10 inches.

**Q: Will this work with 2” abs p-trap? States 1-1/2”/2” respectively in description, but want to be certain**
A: I used a 2” abs p-trap. No issues there. The hard part came when I selected a tub drain, which came with a perfect reducer for the threaded brass tail pipe ( as shown in picture). The reducer was plastic, and I wanted brass. The tub drain manufacturer would not replace nor sell me a brass replacement, so I ordered one from a third party. The ITD35 was easy to install, and suits my needs perfectly. Just be careful choosing a tub drain.

**Q: If I am laying cement board in between the plywood floor and tiles, do I screw the rough in to the plywood or the cement board?**
A: I believe the directions with the product say to screw the rough in to the plywood. Mine is on the plywood, found that flat roofing nails caused less issues with the cement board layer than screws.

**Q: If the p-trap gets backed up, will the seal prevent leakage? I am nervous of the slip in connection and a few years worth of time.**
A: Good afternoon, that is a valid question, although should be directed toward the manufacture. Most issues in a tub are due to hair clogs and generally are limited to the strainer in the tub, not the ptrap. You should recognize the symptoms of a pending clog well in advance of a backup. . You should never get to this point, having two daughters with princess hair forces me to be proactive and remove the hair buildup. Regardless, and in my opinion, the seal in the slip connection is tight, although would not prevent leakage if pressure where present

## Frequently Bought Together

- OS&B ITD35 ABS Island Tub Drain Rough-in for Freestanding Bathtub, Simplifies Installation, Water, Air, and Smoke Testable Tub Drain, Designed for 8"/10" Joist Space, Plumbing Supplies
- DURATECH Inside Pipe Cutter with 2 Replaced Blades, for PVC and Plastic Pipe

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-09-18*