I forgot to add the weight- 5 lb 8 oz.

Rusty

 

 

These cores are used in all 77-90 Chevy Caprice models, as well as a handful of other big ugly American cars.

Outside dimensions:
Total width- 13-1/2"
Core width- 10-5/8"
Height- 8-3/4"
Thickness- 3-5/8"

(Source) Brand- Part number, price
Delco- 15-6513
(Advanced Auto) Factory Air- 54432, $119
(Advanced Auto) Ready Air- 6259N, $155
(NAPA) NAPATEMP- TEM288046, $179
(NAPA) Genuine Air- 788046, $129