I 305: Older Delay

[gary7]

I need an older delay grain for an I300 which I believe is an RDK 12. Can someone verify that for me?
I can not find it anywhere.

Thank you.

 

[dhbarr]

https://www.aerotech-rocketry.com/u...-b849-b9d11cb57f3d_aerotech_delay_lengths.pdf

09300S I300T-S 0.406 RDK-09 Std .610" O.D. Plastic
09300M I300T-M 0.469 RDK-10 Std .610" O.D. Plastic
09300L I300T-L 0.594 RDK-12 Std .610" O.D. Plastic