German Waterproof T5 End Caps (pair)
Use one set of T5 mounts to install one tube
The T5 ( 5/8" diameter )Waterproof-Endcap is approved for all Aquarium and Horticultural applications.
It is IP 66/67 approved, meeting waterproof and dust proof standards.
The collar of the Endcap prevents any substances from entering the lampholder when properly installed.