Timber Abbreviations

AD Air-dried
AL All lengths
AST At ship tackle
AV Average
AVL Average length
AVW Average width
AW All widths
AW&L All widths and lengths
BD FT Board foot/feet
BD Board
BDL Bundle
BEV Bevel
BM Board measure
BSND Bright sap, no defect
BTR Better
CB Centre beaded
CF Cost and freight
CG Close grain
CIF Cost, insurance, freight
CIFE Cost, insurance, freight, exchange
CLG Ceiling
CLR Clear
CLSAB Canadian Lumber Standards Accreditation Board
CM Centre matched
Con. Construction
CS Caulking seam
CSG Casing
CV Centre vee
D&CM Dressed and centre matched
D&M Dressed and matched; centre matched unless otherwise specified
D&SM Dressed and standard matched
D/S or DS Drop siding
D2S&CM Dressed two sides and centre matched
DF Douglas fir
DF-L Douglas fir – Larch
Dim. Dimension
DKG Decking
E Edge
E&CB1S; DB1S Ed Edge and centre bead, one side
E&CB2S; DB2S Edge and centre bead, two sides
EB1S; SB1S Edge bead, one side
EB2S; SB2S Edge bead, two sides
EE Eased edges
EG Edge (vertical) grain
EM End matched
EV1S; SV1S Edge vee, one side
EV2S; SV2S Edge vee, two sides
FAS Free alongside (vessel)
FG Flat or slash grain
FLG Flooring
FOB Free on board (named point)
FOHC Free of Heart Centre
FRM Framing
FRT Freight
FT Foot
FT BM Feet board measure
FT SM Feet surface measure
GR or GRN Green
H or M Hit or miss
H&M Hit and miss
HB or Hem-Bal Hemlock in combination with Balsam fir
HEM Hemlock
HF or Hem-Fir Hemlock in combination with any of the true firs
HRT Heart (wood)
HT Heat-treated
IN Inch or inches
JTD Jointed
KD Kiln-dried
LBR Lumber (timber)
LGR Longer
LGTH Length
LIN Lineal
LNG Lining
LR Log run
M Thousand
MBM Thousand board foot measure
MC Moisture content
MG Mixed grain; RG – Random grain
ML Mixed lengths
MLDG Moulding
MR Millrun
MW Mixed widths
N Nosed
NLGA National Lumber Grades Authority
NO. Number
ORD. Order
Para. Paragraph
Part. Partition
PAT or Pat. Pattern
PLIB Pacific Lumber Inspection Bureau
R/L or RL Random lengths
R/W or RW Random widths
RDM Random
REG. Regular
REG.L Regular lengths
RES Resawed
RFG Roofing
RG Random grain
RGH Rough
RIP Ripped
RND Round or rounded
RSS Rough and/or surfaced to rough size
S&E Side and edge
S/L or SL Shiplap
S1E Surfaced one edge
S1S Surfaced one side
S1S & CM Surfaced one side & centre matched
S1S1E Surfaced one side, one edge
S1S2E Surfaced one side, two edges
S2E Surfaced two edges
S2S Surfaced two sides
S2S & CM Surfaced two sides and centre matched
S2S & SM Surfaced two sides & standard matched
S2S1E Surfaced two sides, one edge
S2S2E Surfaced two sides, two edges
S4S Surfaced four sides
S4S & CS Surfaced four sides & caulking seam
SAP or Sap Sapwood
SDG Siding
SEL Select or Selected
SG Slash grain
SH.D. Shipped dry
SIT.SPR., Sitka or SS Sitka Spruce
SQ. Square
SQRS Squares
SS Sitka spruce
STD Standard
STD.M. Standard matched
STK Stock
STPG Stepping
T&G Tongued and grooved; centre matched unless otherwise specified
TBR Timber
VG Vertical (edge) grain
WDR Wider
WRC Western Red Cedar
WT Weight
WTH Width