Lvl is a coordinate term of lbl.
As initialisms the difference between lbl and lvl
is that
lbl is initialism of lang=en|laminated bamboo lumber, a type of engineered dimensional lumber board, composed of laminated bamboo while
LVL is initialism of lang=en|laminated veneer lumber, a type of engineered dimensional lumber beam, composed of laminated wood.
As an abbreviation LVL is
abbreviation of lang=en|level.