Answering question for Speaker - Celestion, 12", Seventy 80, 80W

Product:
Speaker - Celestion, 12", Seventy 80, 80W

Question:
Why do alot of your speakers on this celestion site not have all the dimension measurements? your greenback speakers do, as others... but your 70/80 doesn't. Could you tell me the total depth dimension of the 12" celestion "Seventy-80" 16 Ohm speaker please? thank you, Bob. My email is bobbyw@cfl.rr.com