All Treads available in the following grades & lengths:
Clear - 36", 42" & 48"
Select - 36", 42" & 48"
Special - 36", 42" & 48" 
Select and Better - 54", 60" & 72"

Risers
3/4" x 7 1/2"
and
3/4" x 8"

Retro/Rabbeted Riser
1/4" x 7 1/2"
and
1/4" x 8"
for use with Rabbeted Treads in retro-fitting existing stairs.