Standard Lumber Trade Abbreviations
| This is a list of standard lumber abbreviations that are commonly encountered in the buying and selling of lumber in the United States. |

AAR | Association of American Railroads
AD | air dried
ADF | after deducting freight
AF | alpine fir
a.l. | all lengths
ALS | American Lumber Standard
AST | antistain treated; at ship tackle (western softwoods)
AV or avg | average
a.w. | all widths
AW&L | all widths and lengths
B1S | see EB1S, CB1S, and E&CB1S
B2S | see EB2S, CB2S, and F&CB2S
B&B | B and Better
B&BTR | B and Better
B&S | beams and stringers
BD | board
BD FT | board feet
BDL | bundle
BEV | bevel or beveled
BH | boxed heart
B/L, BL | bill of lading
BM, b.m. | board measure
BSND | bright sapwood no defect
BTR | better
CB | center beaded
CB1S | center bead on one side
CB2S | center bead on two sides
CC | cubical content
cft or cu. ft. | cubic foot or feet
CF | cost and freight
CIF | cost, insurance, and freight
CIFE | cost, insurance, freight, and exchange
CG2E | center groove on two edges
C/L | carload
CLG | ceiling
CLR | clear
CM | center matched
Com | common
CONST | construction
CS | calking seam
CSG | casing
CV | center V
CV1S | center V on one side
CV2S | center V on two sides
DB Clg | double beaded ceiling (E&CB1S)
DB Part | double beaded partition (E&CB2S)
DET | double end trimmed
DF | Douglas-fir
DF-L | Douglas fir, larch
DIM | dimension
DKG | decking
D/S, DS, D/Sdg | drop siding
D1S, D2S | see S1S and S2S
D&M | dressed and matched
D&CM | dressed and center matched
D&SM | dressed and standard matched
D2S&CM | dressed two sides and center matched
D2S&SM | dressed two sides and standard matched
D4S | dressed four sides
E | edge
EB1S | edge bead one side
EB2S, SB2S | edge bead on two sides
ED | equivalent defects
EE | eased edges
EG | edge (vertical or rift) grain
EM | end matched
EV1S, SV1S | edge V one side
EV2S, SV2S | edge V two sides
E&CB1S | edge and center bead one side
E&CB2S, B2S, BC&2S | edge and center bead two sides
ECM | ends center-matched
E&CV1S, DV1S, V&CV1S | edge and center V one side
E&CV2S, DV2S, V&CV2S | edge and center V two sides
ES | Engelmann spruce
FA | facial area
Fac | factory
FAS | free alongside (vessel)
FAS | Firsts and Seconds
FAS1F | Firsts and Seconds one face
FBM, Ft. BM | feet board measure
FG | flat or slash grain
FJ | finger joint (end-jointed lumber)
FLG, Flg | flooring
FOB | free on board (named point)
FOHC | free of heart center
FOK | free of knots
FRT, Frt | freight
FT, ft | foot or feet
FT. SM | feet surface measure
FURN | furniture stock
G or GR | green
G | girth
GM | grade marked
G/R, GR | grooved roofing
HB, H. B. | hollow back
hdwd. | hardwood
HEM | hemlock
H-F | hem-fir
Hrt | heart
H&M | hit and miss
H or M | hit or miss
IC | incense cedar
IN, in. | inch or inches
Ind | industrial
IWP | Idaho white pine
J&P | joists and planks
JTD | jointed
KD | kiln dried
L | western larch
LBR, Lbr | lumber
LCL | less than carload
LGR | longer
LGTH | length
Lft, Lf, lin. ft. | lineal foot or feet
LIN, Lin | lineal
LL | longleaf
LNG, Lng | lining
LP | lodgepole pine
LR | log run
M | thousand
MBM, MBF, M.BM | thousand (feet) board measure
MC, M.C. | moisture content
MCO | mill culls out
MERCH, Merch | merchantable
MG | medium grain or mixed grain
MH | mountain hemlock
MLDG, Mldg | moulding
Mft | thousand feet
M-S | mixed species
MSR | machine stress rated
m.w. | mixed widths
N | nosed
NBM | net board measure
No. | number
N1E or N2E | nosed one or two edges
Ord | order
P | planed
PAD | partially air dry
PART, Part | partition
PAT, Pat | pattern
Pcs. | pieces
PE | plain end
PET | precision end trimmed
PP | ponderosa pine
P&T | posts and timbers
P1S, P2S | see S1S and S2S
Qtd. | quartered
RDM | random
REG, Reg | regular
Rfg. | roofing
RGH, Rgh | rough
R/L, RL | random lengths
R/W, RW | random widths
RES | resawn
SB1S | single bead one side
SDG, Sdg | siding
S-DRY | surfaced dry (19 percent moisture content or less)
SE | square edge
SEL, Sel | select or select grade
SE&S | square edge and sound
Sftwd. | softwood
SG | slash or flat grain
S-GRN | surfaced green (in excess of 19 percent moisture content)
SGSSND | Sapwood, gum spots and streaks, no defect
SIT. SPR | Sitka spruce
S/L, SL, S/Lap | shiplap
SM | surface measure
Specs | specifications
SP | sugar pine
SQ | square
SQRS | squares
SR | stress rated
STD, Std | standard
Std. Igths. | standard lengths
STD. M | standard matched
SS | Sitka spruce
SSND | sap stain no defect (stained)
STK | stock
STPG | stepping
STR, STRUCT | structural
SYP | southern pine
S&E | side and edge (surfaced on)
S1E | surfaced one edge
S2E | surfaced two edges
S1S | surfaced one side
S2S | surfaced two sides
S4S | surfaced four sides
S1S&CM | surfaced one side and center matched
S2S&CM | surfaced two sides and center matched
S4S&CS | surfaced four sides and calking seam
S1S1E | surfaced one side, one edge
S1S2E | surfaced one side, two edges
S2S1E | surfaced two sides, one edge
S2S&SL | surfaced two sides and shiplapped
S2S&SM | surfaced two sides and standard matched
TBR | timber
T&G | tongued and grooved
UTIL | utility
VG | vertical (edge) grain
V1S | see EV1S, CV1S, and E&CV1S
V2S | see EV2S, CV2S, and E&CV2S
WC | western cedar
WCH | West Coast hemlock
WCW | West Coast woods
WDR, wdr | wider
WF | white fir
WHAD | worm holes a defect
WHND | worm holes no defect
WT | weight
WTH | width
WRC | western redcedar
WW | white woods (Engelmann spruce, true firs, hemlocks, pines)
YP | yellow pine

| References: U.S. Department of Commerce. Strip oak flooring, Comm. Stand. CS 56 Washington, DC: USDC U.S. Department of Commerce. American softwood lumber standard. Prod. Stand. PS 20. Washington, DC: USDC |