UV Germicidal Bulb TUV G4T5 254 nm 4W UVC.

and

G4T5 365 nm 4W UVA Black Light.

2 brands to choose from for the 254 nm. Philips / Creator .

Also available: Japanese Made Sankyo Denki G4T5 254 nm 4W UVC Bulb @$13.99

6” (15cm) length including pins, 5.3” (13.5cm) excluding pins. G5 base (pin distance 5mm).

UV Bulb G4T5 254 nm 365 nm 4W TUV Phillips / Creator BL UVA UVC 6” Length

$9.49