International trust

Fenestrum timber windows and doors have warmed not only the houses in Lithuania. Currently, more than a few hundreds of houses in Germany and the UK are glazed by our company. Some recommendations from the international partners can be found below. We hope that they will help you to make the final decision and you will contact with us immediately!   “I have been dealing with Fenestrum for over 5 years. I have found all


Being one of the leaders in the market, Fenestrum offers the latest state-of-the-art production, the most innovative timber window and door solutions and the highest quality customer service as well as warranties to our customers. Other than that Fenestrum guarantees a good price since we manufacture and sell our products directly without any mediators.   Our windows are manufactured by a custom order only, therefore a personalized attention allows to achieve the highest standards. From


The basic set of a quality timber window includes: Material (three layer timber); Single, double or triple glazing; Low e, toughened, laminated glass or obscure glass; Finish (paint or varnish); Toughening; Hardware with horizontal and vertical opening mechanisms.   Glued laminated veneer lumber, glazing, painting materials and hardware is used for manufacturing timber windows and doors. Windows and doors are made from glued laminated veneer lumber, pine, oak, Meranti. Only quality materials that have the

About Fenestrum windows and doors

enestrum specializes in manufacturing these windows and doors: EURO 100 (0,85 w/m2 K); EURO 78 (1,0 w/m2 K), SASH SPRING WINDOWS, SASH BOX WINDOWS, CASEMENT FLUSH WINDOWS, CASEMENT STORMPROOF WINDOWS, Sliding and other external and internal doors. Fenestrum timber windows and doors are one of the most modern in Lithuania. You can see the result of our work in luxurious apartment buildings in Vilnius old town, public spaces or even churches and, of course, exclusive

Why Fenestrum?

High quality timber windows and doors allow to add more style, subtle luxury and quality to our daily life. They allow to achieve eternal aesthetics, a sense of coziness, warmth and naturalness. Also, they provide exterior and interior designers and architects with an absolute freedom. We are ready to contribute to the creation of your exclusive space, whether it is a mansion or a log sauna, a garden house or a balcony window, or maybe