Product size 11.8`` * 18.5`` (30CM*47CM), suitable for most standard or non-standard American fish tanks Transparent partition design (with white protective film to be removed before use), can be bent, cut, assembled After installation, you can easily separate the fish tank into the size you need, and we consider that it does not affect the aesthetics of your fish tank. We use transparent design and high-grade environmentally friendly materials to provide adequate protection for your fish safety. We have a variety of sizes to choose from, and won't be affected because your tank size is not non-standard. But the sucker needs to be purchased separately NOTE :The Suction cups are not included (White film need to bed removed before use)