Application: Keep your plant enjoy light, sun without the heat from being outside! That menas better growth and blooms. If you have a naughty kitten who always eats or destroys succulents or other small plants, then this window shelf for plants indoor can help you. Suction cup shower shelf can also be used to store skin care products or children's toys in the bathroom, saving space. Beautiful way to display plants, figurines, fairy gardens or terrariums Our ledge suction cup shelf is pretty sturdy! Definitely clean the glass before you attach the shelves. Question & Answer: Question: How much weight can it hold? Answer: The ledge shelf will hold up to 8 LBS of weight. Question: Would this window plant shelf hold up on a window that will periodically be sliding open and shut ? Answer: Yes, it sticks on really well just make sure you wipe down the area and make sure it’s clean and dry before sticking it on and you shouldn’t have any problems. Question: How far does the Arm extend? Answer: It extends 4 inches. Specification: Size: 15" * 4" Material: Acrylic Color: Transparent Package: 1 pack window shelf with 6 pcs suction cup Tips: 1. When there is dirt, oil gas, moisture, waste, powder, etc. on the adsorption surface, because it cannot be attached to it, please wipe it off before attaching it 2. Please do not attach it to the uneven surface of the suction surface. 3. In the case of attaching to the surface of the tile, please confirm whether the surface is smooth before attaching it. (If a part of the surface of the tile is smooth, there will be slack. If the surface is slack or uneven, air will easily enter from the outside, which will cause the product to be easily pulled off.) Please do not stick to the tile Where there is unevenness or connection. 4. Please stick it out of reach of children.