Cascade Koi & Aquatics have been selling many Yamitsu products for many years.
These are a genuine Kockney Koi Yamitsu Algae Master UV spare part.
Two sizes are available the small is for the T5 size 6w, 8w and 11w Bulb the large is for the T8 size 15w,25w,30w and 55w.
These are a universal product and will fit other makes and models.
|T5 UV Bulb Holder