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Oatey 41641 slope extension polystyrene 20 inch unfinished shower component

OATEY

OATEY 41641 Slope Extension Polystyrene 20 in

SKU CH-JWET-28D75

Polystyrene slope extension, 20 inches long, designed for shower installations with unfinished surface

  • Polystyrene construction resists corrosion in wet shower environments
  • 20-inch length extends drain slope for proper water flow
  • Unfinished surface allows custom finishing to match shower design
  • OATEY brand delivers reliable plumbing component performance
  • Non-CEC compliant design suits installations without efficiency mandates

Slope Extension for Shower Installations

The Oatey 41641 slope extension is a 20 inch polystyrene component designed for shower drainage systems. It provides a smooth transition to maintain proper water flow toward the drain. This part suits plumbers and DIY renovators completing rough-in or finish work.

Unfinished Polystyrene Construction

The extension arrives in an unfinished state, allowing installers to adapt the surface to surrounding tile or membrane materials. Polystyrene offers lightweight handling and easy cutting with standard tools on site. Its non-structural role means it relies on the surrounding assembly for long-term rigidity.

Non-CEC Compliant Drainage Accessory

This slope extension does not meet California Energy Commission compliance requirements for the jurisdiction. It carries no rated connection size, so the installer must verify fit with the specific shower base and drain body. The part addresses slope correction only, not waterproofing or load-bearing needs.

Highlights

  • Polystyrene construction resists corrosion in wet shower environments
  • 20-inch length extends drain slope for proper water flow
  • Unfinished surface allows custom finishing to match shower design
  • OATEY brand delivers reliable plumbing component performance
  • Non-CEC compliant design suits installations without efficiency mandates

Specifications

BrandOATEY

Questions about this item

What does the 20 in length mean for fitting a shower slope extension?

The 20 in length gives you a twenty-inch run to bridge the gap between the drain and the shower base when the standard piece falls short.

What mounting or framing does the polystyrene slope extension require?

It rests on the subfloor and is secured with mortar or adhesive; no brackets or mechanical fasteners are included.

How is the slope extension installed and what step is often missed?

Dry-fit the piece, bed it in mortar, then slope it toward the drain; the step often missed is checking the fall with a level before the mortar sets.

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