width of Transom Well, 23' Sceptre, 1977

[samaha]

sorry, 1978 Sceptre if it matters.

Hello one and all.
I have an opportunity to buy a transom/engine shroud, the three sided hinged thing that covers the top of the engine and helps reduce engine noise. Some use the top as a bait cutting station or a casting platform. They're kinda funny looking but I like the decibel attenuation potential. The item in question is 40" wide, 32" high, 24" deep.
I ask because my lovely 'Seneca' lives in the New England, while I am in the Rocky Mts.
Yes, I have already searched and googled. Figured this could be readily answered by one of the helpful experts here.
Thank you.

This is what my transom looks like.


this is not the shroud, just examples.