The frames of the harmonica door are connected with a roller band hinge. As you can see in the picture below, the hinges roll just like a ‘train on the rails’. The roller band hinges are integrated and centrally built into the sill with roller system.
Because you don’t have to ‘lift’ the door up, which is sometimes the case with other doors, the door is very easy to open.
Order your aluminum harmonica door here!
Put together your window frame simply and quickly completely customized.
