wood grade stamp 1

[PSUengineer1]

trying to decipher grade of wood from stamp shown in attached pic. Southern pine #2 from 2001. What does the D19HT?? stand for on the stamp? This is a nominal 2x member on a wood deck. Thanks.

 

[dhengr]

PSUengineer1:
KD19HT means kiln dried to 19% and heat treated primarily to kill pests.

 

[PSUengineer1]

Thank you, dhengr