K-Series - linen (see-through frosted) glass. 
AP - frosted glass. 
MR - crystallized glass.
KW, VW, AW, SL, GW, TW, TS, AG, AN, TG,TQ - clear glass
All glass doors include glass pre-inserted.
WXXXXGD = No mullion.
WXXXXMGD = With mullion. 
Cabinet sold separately