This maker apparently goes by collar size, so a 2XL will probably be an 18 or an 18.5 which they don't seem to have. This is the wool blend which is almost certainly the screen-used type.
<ul><li>2 oz. 2-Ply 55% Polyester / 45% Wool Gabardine - New CHP Color</li><li>7-Button Placket Front</li><li>Plain Rounded Bottom Pockets with Scallop...
www.galls.com
the same shirt by Flying Cross they have an 18.5 but it has 33 sleeves, this is the poly-rayon shirt which is what I wear, it's nice-looking and comfortable.
Shop now for the Flying Cross Deluxe Polyester Rayon Long Sleeve Shirt at Galls, your trusted authority for tactical gear, duty gear & more.
www.galls.com
I'm sure if you look around you can find somebody that has them in stock in your collar size and sleeve length.
I picked up my shirt, used with Arizona Department of Forestry patches, on Ebay for around $25. Due to it being worn and washed repeatedly it has a nice soft feel. Mine is 18.5 x 35, that is size 18.5 neck and 35 inch sleeve length. I wear a 2XL.
I just checked on Ebay and there aren't any that size in the correct style and colour at the moment, but they do come up on Ebay regularly.
And it's not just Flying Cross and Fechheimer but other firms as well, such as Elbeco, make those exact shirts. I typed in California Highway Patrol but innumerable US agencies wear those shirts.
For Season 3 here's a used Elbeco shirt in silver tan, 2XL, on ebay
NEW ELBECO MENS DUTYMAXX SHORT SLEEVE STRETCH SHIRT 5592 SILVER TAN 2XL | eBay