By their very design and construction all Monarch Monaframe and Smart Systems windows offer excellent security. They are extremely rigid to resist distortion and bending and are made from a material which is considerably stronger than PVCu and doesn't need additional reinforcement.

The double-glazed sealed units are fixed in place by high security glazing beads which make it extremely difficult to remove the glass and reach the window handle. Optional security glazing clips make de-glazing virtually impossible.
You have a choice of appearance when it comes to the opening windows (or vents) but whichever style you choose it won’t look very attractive to a burglar. They are designed so the opening vents close flush against the window frame which with the low expansion and contraction rates of the aluminium window, leaves no gaps which can be used to prise the window open.
In addition, for each style of vent, there is a high security locking system, using the highly regarded Laird Shootbolt mechanism. So whichever vent you like the look of you can rest assured that your windows are always safe and secure.