Life gets busy and constantly monitoring your plants can become quite difficult. But with help of Mayne’s line of self-watering planters and window boxes caring for your plants just got easier! Mayne s window boxes (48 x 11.7 x 10.2 ) come with built-in water reservoirs. The water reservoir can be filled by just watering your plants directly. You can also directly access the water reservoir by drilling an optional fill port hole. These window boxes come with a fill port plug to cover this hole. The drainage hole allows excess water to seep out to protects roots from oversaturation and rot.