PNW Custom Slimline Anemone BoxDimensions: 10in L x 3in W x 3in H The Slimline Anemone Box is one of our most versatile boxes. It includes a locking lid mechanism to ensure nothing escapes, vented cuts throughout the box to encourage flow and circulation, our epoxy coated and sealed magnets to keep your aquarium safe, and extra strong magnets to hold onto your aquarium without falling down the glass. Because this box is so low profile, it fits right onto your glass without sticking