Brand ktondic Material Wood, Polyvinyl Chloride Special Feature 360 degree Perch, Weatherproof Mounting Type Window Mount Product Dimensions 23.62"L x 9.4"W x 9.2"H About this item ?Clear view?This bird feeder window is made of PVC and PETG, transparent PETG and white PVC board looks more advanced, like a beautiful decoration in your house. Upgraded PETG sheet is stronger and less fragile. And you can also see the bird clearly from the house. ?Easy to fill?There is a hole at the top of the bird feeder, you can always fill the bird feeder with food inside the house, and when you don't need to fill it, you can cover the hole with the matching lid. ?Window bird feeder?The semicircle bird feeder is 23.6 x 9.4 x 9.2 inch, the length of the window bird feeder can be adjusted with plates on both sides,the length can be adjusted to a maximum of 30 inch. so it fits single and double hung windows only! Windows size needed is a standard size.Please check the size on the picture. ?Easy to install and clean?Easy to install, you can adjust the size of the opening by pushing the board according to your installation position. And easy to clean, you only need to use a cloth to clean it. ?Bird feeders for window?The product is suitable for all kinds of birds, like blackbirds, robins, yellow finches, woodpeckers, pigeons, finches, birds of prey, goldfinches, and if you put in food that squirrels like to eat, you can also attract squirrels to come.