This laboratory style glass terrarium is unique and it's pine wooden base is made custom in the US. It's overall footprint is 10.5" x 8.5". The 2L glass bottle is 10" long and 5.25" in diameter. Inside the bottle, the "base" inside diameter is approximately 4.75" and the "top" inside diameter (the place where you'd put things through) is approximately 2.3" diameter. Because of it's removable glass cap, this terrarium can be both open or closed in style. One thing to note: because these are hand blown glass reagent bottles, they can have imperfections, come with dust/dirt, etc..