How to mount a mirror on a sliding door yourself? What interiors does this type of doors match? Answer in the article.

In the case of a small interior, an ill-considered design is out of question. So how to design a small flat? Find it out in the article.

How to replace a door lock cylinder by ourselves? Check out our step-by-step guide on how to do it.

Sonoma Oak is a unique shade resembling light oak wood. How to combine this timeless decor with the rest of the interior design? Find it out in the article.

Proper adjustment of hinges allows them to move freely without friction or resistance. How to adjust them and what to lubricate hinges with? Answer in the article.

A properly measured opening will allow a quick installation of doors. What should the opening be for 90-cm-wide door leaf? Check it out in the article.

What should be taken into account when choosing interior doors? How to choose a right door for a wooden floor? Answer in the article.

Replacing a door handle is a task that seems complicated at first glance. In fact, even an amateur can handle it. Check it out in the article.

Classen is constantly taking steps to adapt its products to the changing needs of the market and consumers.