1 x 8 Ultra Lite Fiberboard Primed

18UL
net dimensions: 3/4" x 7-1/4" x 16' (For interior use only) shown

110UL
net dimensions: 3/4" x 9-1/4" x 16' (For interior use only) not shown

112UL
net dimensions: 3/4" x 11-1/4" x 16' (For interior use only) not shown