Stable and : flower box holder allows you to securely attach your flower box for window sills outside without drilling holes. The flower box holder is almost , so that the flower decoration is in the foreground. Wind and storm-proof: the window sill flower box holder for window sills outside is wind and storm tested. Thus, the flower pot holder balcony keeps your flower boxes securely in place outside. Height adjustable: the window sill flower box holder outside fits flower boxes from 10-18 cm height. Tip: use a screwdriver to loosen the screws of the window sill bracket and adjust the height of the hooks for flower boxes quickly and easily. Easy to install: the window box holder for window sill outside can either be hooked on the window frame or stick the window sill holder with adapters to the flat window sill (Important: the must be smooth, dry and clean!) Color: Black Material: Metal Package Contents: 4 x InvisibleWindow Sill Flower Box Holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.