We've all heard about the potential for someone to break the window in the back door to gain access to the lock. Here's the solution. This reliable theft deterrent for back doors, garage doors, cottage doors and sheds secures windows up to 24" (61 cm) wide and 40" (106 cm) high. The steel rods are spaced only 1 1/4" apart so even the smallest hands can't get through this door grille. Tamper-resistant hardware allows you to mount the grille on the interior or exterior of the door and mounting legs offset to clear trim around window. The unit can still be easily removed to clean the window. And, with its durable white powder coating, it may even blend right in.