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
