Willygee, that is the Menards product you can buy direct for about 50 % less than the website you posted.
I would agree that the model is at least 1:43 if not even larger. See the photos I have taken from my collection. The yellow box truck is New Ray 1:43; ambulance is from Menards (same cab as your posting); green Ford is the exact same as your picture and it is from Menards; white Chevy Tahoe is 1:43 and made by First Response; white pick up in Bobcat dealer paint is 1:50; white International cab over is 1:50 from K-Line.
Hope this helps all see the size more accurately.