That's what mine looks like.

Go on the paragon corvette site and they show the horizontal for 70-72 and then they show the diagonal for the same years.

Diagonal for 69 is my guess, at least early 69

I've an advertising photo taken in late fall 1969 of a Z/28 with an upright A212CW square mesh filter on it,but can't get it to post,and when I shrink it,the quality suffers.
I suppose it's a moot point anyway,as has been said,earlier cars seem to have had the diagonal square mesh,(turned on their bias),and later got the upright square mesh.
('69 camaros were made much later on into 1970 production year)

So what would you cansiter early & late production my car is a june built car

Me personally I wouldn't consider a June car early at all. You're 2 months away from being a year into production and already past many of the revisions that happened throughout production. Just my thoughts. In my mind I can't really grasp why a judge would consider June early and ding you for an air filter.

There are several vintage road test photos of '69s that clearly show the element.

April '69 PHR has the same '69 Z/28 seen in Hot Rod and Sports Car Graphic. It was a production car built early October '68 at Van Nuys. Both it and the 396 Nova in the same issue have the 45º square mesh.

One of the more famous Z/28s is the yellow/yellow JL8 car that was featured on the cover of the August '69 Car Life. They tested it with a cross-ram and fiberglass hood. However, Road Test featured it in their August '69 issue, pre-cross-ram. The combination of JL8 and yellow houndstooth means the earliest it could have been built was very late February. Don't know anything else about it.

Here's the engine bay pic.

That car was what put me on the hunt for a yellow/yellow car....Joe

https://i.postimg.cc/XJrvJhMX/CL-69-08-001.jpg

http://www.mustangtek.com/Library3/CL_69-08.html

Yep, that's the one :) Didn't end up with a Z/28. Got a SS396
...Joe

Any more input on these filters?
Just my .02 cents worth
I’m thinking pre ‘68 OEM were Embossed
Then OEM and over the counter were stamped
“ Best Way to Protect Your Engine -Replace with AC Type A212CW”
What I’m not sure of are when the wire design changes were maid.
You have the
“Welded chicken Wire” Square Mesh then,
“ Welded Chicken Wire” Square Mesh tilted at 45 deg. then,
The “ Expaned Metal” tilted at 45 deg.
Then some time in early 1970’s they got away from
“Best Way To”
And just left
“Protect your Engine with AC Type A212CW”
And later with just
“A212CW”
I have collected these for years and
will be listing in the for sale ads so keep an eye out.
The other question is
How many AC Plants made these and where were they located?
Did St.Louis , Norwood, Baltimore etc. recieve product from an East Coast plant.
And the California plants another?
This is a great source of info here and I’m surprised this thread isn’t a lot older.
Even on the Corvette sites not much at all.
Thanks SYC!!
Joe