OPTI’ONE® Window Sill and Door Sill

The 2-in-1 solution, so attractive and easy to install!

The first aesthetic threshold solution that reduces the effort and time required for installation. WESER has designed a 2-in-1 solution to reduce labor and safety on building sites, while cutting installation time. This sill, which can also be used as a threshold, will enhance any sash with its perfectly smooth finish and trendy colors.

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Available colors
Pebble grey
Pebble grey
Tradition White
Tradition White
Range description

OPTI’ONE ® is a WESER innovation that makes life easier for craftsmen. This product offers remarkable aesthetics and ease of use for all.

  • It’s the first low-profile solution for support and threshold. This 2-in-1 solution facilitates supply for the construction of houses and buildings. What’s more, OPTI’ONE® is easy to install in any region, even in earthquake-prone areas.
  • Its specific slope guarantees comfort when crossing door and window thresholds. It also ensures excellent drainage of rainwater. What’s more, OPTI’ONE® is compatible with most joinery systems on the market. It eliminates the need to cut materials on the building site, and simplifies installation thanks to a heel adapted to the angle brackets.
  • The range covers monolithic openings from 50 to 250 cm. Installation is rapid, saving 60% time compared with conventional solutions. This product is one of the lightest on the market at 31 kg/ml, i.e. 35% less than a traditional support. In compliance with article R.4541-9 of the French Labour Code, the limit is 25 kg for women and 55 kg for men. In this way, OPTI’ONE® reduces the strain on craftsmen.
  • Installation from the inside of the building ensures the installer’s safety. Its smooth finish facilitates daily maintenance. Our products are tinted and water-repellent to guarantee long-lasting color.
  • Take advantage of the OPTI’ONE ® threshold sill for optimum performance. In addition, integrate OPTI’ONE ® sill sill to enhance the aesthetics of your constructions.

Read more :

Single-family homes: OPTI’ONE® 2-in-1 chair support – Fast installation & smooth finish

Appui Seuil 2 en 1 OPTIONE : Innovation at the Service of Your Openings

Range elements

OPTI'ONE® 35

OPTI'ONE® 35

52,8 × 35 × 5 cm

Technical data

Range width

  • Choose your product
  • Select dimensions (if required)
  • Choose the shade

Installation aid

Installation tips

Simple installation

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