Steel Door Institute Standard Steel Door Design Nomenclature

Click the numbers to view the various door design nomenclature


Nomenclature Letter Symbols
F
T

WG
E2
E4
E6
E8
- Flush
- Textured
- Wood Grain
- 2 Panel Embossed
- 4 Panel Embossed
- 6 Panel Embossed
- 8 Panel Embossed
EWG
D
L
LL
V
VL
N
- 6 Panel Embossed with Wood Grain
- Dutch Door
- Louvered (top or bottom)
- Louvered (top and bottom)
- Vision Light
- Vision Light and Louvered
- Narrow Light
NL
G

EG
GL
FG
F
- Narrow Light and Louvered
- Half Glass (options G2, G3,
G4 and G6)
- Embossed and Half Glass
- Half Glass and Louvered
- Full Glass (option FG3)
- Full Louver

*Note: Design combination is indicated by light followed by louver.

Louvered door designs are further specified as inserted louver (I), pierced (P), or air condition grille (A). When ordering, specify design, louver size and/or free area requirements.