Utilizes CO2 gas to euthanize animals. Lid has clear plexiglas window, to allow you to confirm the disposition of your animal. Approx. 14"x28"x38" Includes tubing only. You must provide your own source of CO2 and a low-flow regulator, both of which are available at most welding supply stores. Regulator must be adjusted to allow for no more than 10 psi. Anything greater than 10 psi will cause your tubing and regulator to freeze.