2” Dome-D-Lock GDL-Dome-2000................. Patent # US 8,496,811 B2
3” Dome-D-Lock GDL-Dome-3000................. Patent # US 8,496,811 B2
4” Dome-D-Lock GDL-Dome-4000................. Patent # US 8,496,811 B2
2” Drain-Lock GDL-2000................. Patent # US 8,496,811 B2
3” Drain-Lock GDL-3000................. Patent # US 8,496,811 B2
4” Drain-Lock GDL-4000................. Patent # US 8,496,811 B2
GDL-SFD-3500-S 4.57” Smith Style............. Patent # US 9,139,996 B2
GDL-SFD-3500-Z 4.68” Zurn Style............... Patent # US 9,139,996 B2
GDL-SFD-3500-J 4.52” Josam Style............ Patent # US 9,139,996 B2
GDL-RFD-3500-S 4.70” Smith Style............ Patent # US 9,139,996 B2
GDL-RFD-3500-Z 5.00” Zurn Style............ .. Patent # US 9,139,996 B2
GDL-RFD-3500-J 4.65” Josam Style............ Patent # US 9,139,996 B2