Steel Conduit

Penetration Item (Size and Type)

Sleeve
O = Optional
R = Required

Point Contact

Assembly Thickness

F Rating

Nelson Product

UL System

Nelson FS Drawing

1" EMT/RMC      5 2 FSP W-L-1006 FS-0041
1" EMT/RMC, multiple  R   5 1,2 FSP W-L-1031 FS-0098
2" EMT/RMC, multiple      3¾,5 1,2 LBS3 W-L-1335 FS-0591
3" EMT multiple    X 3¾,5 1,2 ES1399 W-L-1277 FS-0349
4" EMT/RMC      3¾,5 1,2 CLK W-L-1030 FS-0095
4" EMT / RMC  R   3¾,5 1,2 CLK W-L-1083 FS-0133
4" EMT / 6" RMC    X 3¾,5 1,2 ES1399 W-L-1276 FS-0348
4" EMT / 6" RMC    X 3¾,5 1,2 LBS3 W-L-1334 FS-0590
4" EMT / 6" RMC w/ 2" fiberglass/min. wool    X 3¾,5 1,2 ES1399 W-L-5178 FS-0463
4" EMT / 6" RMC w/ 2" fiberglass/min. wool  R X 3¾,5 1,2 ES1399 W-L-5179 FS-0464
4" EMT / 6" RMC w/ 3/4" AB / PVC    X 3¾,5 1,2 ES1399 W-L-5180 FS-0465
4" EMT / 6" RMC  R X 3¾,5 1,2 ES1399/LBS3 W-L-1405 FS-0657