[Clear view]This bird feeder window is made of PVC and wood, transparent 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 . [Easy to fill]There is a hole at the top of the bird feeder, you can always fill the bird feeder with food inside , and when you don't need to fill it, you can cover the hole with the matching lid. [Window bird feeder]length of the window bird feeder can be adjusted with plates on both sides,the length can be adjusted . so it fits single and double hung only! size needed is a standard size. [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, , pigeons, finches, birds of prey, goldfinches, and if you put in food that squirrels like to eat, you can also attract squirrels to come. Material: plastic+wood colour: As Shown Package Contents: 1 x Window Bird Feeder 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.