The letters GD, HD, BD, or BDC should be put after the lock function. EXAMPLE: ND53BD
GD = Schlage SFIC core
HD = Construction core
BD = Less core
BDC = Plastic temporary construction core
Schlage only offers a limited number of keyways that match the BEST sections. Available in keys and cores.Specify keyway using the B suffix: AB = A, BB=B, CB=C, DB = D, DDB=DD, EB = E, FB = F, GB =...