Mirror Plex Extension Back

BXHPM-(NL)(NH)
BXHPM…..Mirror Plex Extension Backs
NL…..Nominal Length 3′ or 4′ (914 mm or 1219 mm)
NH…..Nominal Height 06″ to 24″ in 6″ increments
(152 mm to 610 mm in 152 mm increments)