1
Used on double windows where there is no mullion to lock the first closing leaf or bi-folding windows, the spring catch and socket catches are fastened to this leaf to lock the window to the sill. The second closing leaf is fastened to the first with a wedge casement fastener. There may be a need to extend the length of the casement pin depending on the placement of the casement fastener and the width of the window stiles.
1
Used on double windows where there is no mullion to lock the first closing leaf or bi-folding windows, the spring catch and socket catches are fastened to this leaf to lock the window to the sill. The second closing leaf is fastened to the first with a wedge casement fastener. There may be a need to extend the length of the casement pin depending on the placement of the casement fastener and the width of the window stiles.