Center Seal Bar

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Steady Center Seal Bar

Our window types with a stable center sealing bar have an additional third centrally located sealing level compared to windows with stop seals.

“BRAND” windows with a stable center sealing bar are marked with MD and offer the following advantages:

  • Higher sealing between frame and sash
  • Easy cleaning of the frame rebate
  • Glass fiber-reinforced plastic strips instead of conventional steel reinforcement
  • Stronger burglary resistance through mechanical protection of the frame-sash construction
  • Protection of the fittings against environmental influences and burglary attempts
Our Products

Window Models


Safety, energy efficiency, indoor health, design, and durability are the features with which you equip and design your home. Our window series are designed and manufactured according to these requirements. The profiles of our window series are available with frame depths of 70mm and 85mm, allowing all our window models to be easily equipped with triple glazing. The brand windows constructed in this way exceed the Uw value of 0.95 W/m2K required by KfW for funding. This not only benefits the environment but also saves energy and costs.

Our Product

We Ensure Tested quality

All products from SIGMA and Fenstertechnik brand GmbH undergo regular quality and product safety checks conducted by independent institutes according to standard guidelines.

Email Us

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Call Us

+(123) 456 7891

we are open

8:00 – 6:00

location

Manhattan Beach, CA

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