What is a tilt window? Casement windows explained simply!
Tilt windows are a variation of Danish windows. Like all outward-opening windows, they belong to the...
What is a ground floor window? A ground floor window explained in simple terms!
An ground-floor window is a window located in a ground-floor room and is therefore installed very lo...
What is a cat flap? A simple explanation of cat flaps!
A cat flap is an opening in a door, usually a front entrance door, that allows a cat to leave and en...
What is a radiation protection door? Radiation protection doors explained in simple terms!
Radiation protection doors are specialized doors that play virtually no role in private households. ...
What is a security door? Security doors explained in simple terms!
A security door is more robust than a standard door and often features a different, more secure lock...
What is a sliding door? A sliding door explained in simple terms!
A sliding door is an interior door whose door leaf slides into a specially designed recess within th...
What is a smoke control door? Smoke control doors explained simply!
When a fire breaks out, the greatest danger is often not the heat but the smoke. People who inhale t...
What is a window bolt? Window bolts explained simply!
Window bolts are small mechanical devices used to lock windows. A window bolt is also known as a sli...
What is a cross-bit lock? The cross-bit lock explained simply!
A cruciform lock is an outdated locking system that has largely been replaced by the profile cylinde...
What is a revolving door? Revolving doors explained simply!
A revolving door consists of two to four door leaves attached to a vertical central axis that rotate...