A very slim, yet large-area in-wall overflow drain. The unique design allows for the water level to be just a few cm below the wall, creating a more elegant and visually appealing result.

The SO Series overflow drains are compact in shape, yet sufficient in allowing large volumes of water to pass through. Being entirely made of AISI 316L Stainless Steel, the housing offers excellent impact and corrosion resistance.

The front grill blocks debris, plastic bags and leaves from entering and blocking the lines. The premium stainless steel finishing blends into the basin materials, looking discrete and elegant.

Can be easily installed flush, in-wall, leaving enough front space for lining (e.g. tiles, granite, etc).

  • Prevents overflow & maintains water level
  • Slim, Elegant Design
  • Heavy Duty, Reliable Solution
  • Installed flush, in-wall
  • Made of Stainless Steel 316L

Technical Specifications

Slim Line Overflow drawing

in mm


in mm


in mm


in mm


in mm

Open Area

in cm2

SO 150 1½" 200 70 50 125 40 28
SO 200 2" 300 70 50 125 40 40
SO 300 3" 500 70 50 145 40 73



You can download any of the following files for your own personal use. Information contained in these files might change without prior notice. Copy in part or in whole, as well as reproduction, publication, distribution or any other use are strictly prohibited without written consent by Fontana.

Downloads for SO Series Slim In-Wall Overflow

This file requires registration before download. Please fill in your email and contact details to receive the file(s).

Get a quote for SO Series Slim In-Wall Overflow