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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

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