GS - Encapsulated Variant 
LED lights can face submersion for an extended period in certain applications. This challenge is also present in some industrial, infrastructure and maritime locations.
Nemalux offers a version of the GS that is suitable for IP68 applications. An optically clear encapsulant creates a permanent seal. Maintaining protection against the ingress of water to a depth of up to 25'. The GS-EN model operates at full output in dry as well as submerged conditions.
GS-DC IP68 Encapsulated Spec Sheet
GS-DC IP68 Encapsulated Installation Manual
IP Ratings Definition
Bullrail-GS 
The Bullrail is an impact resistant protective case designed for the GS Series.
Installing light fixtures at an industrial worksite can present a set of unique challenges that can add substantial delays and costs to an existing budget. Cooperation with a manufacturer that offers additional kitting services can mitigate these risks and help with the delivery of a successful project.
The Bullrail can be made to fit the GS-2 & GS-4.
Solar-GS 
The Solar-GS is an solar powered hazardous location LED light.
1,200 lumen package for 8ft mounting height designed for remote locations. Suitable for marine applications and available with ON/OFF or 30 minute time switch. The assembled unit has a battery backup size based on location and target hours of operation. It ships pre-assembled with a galvanized steel pole with stainless steel mounting brackets.
Solar-GS Spec Sheet