Our Pianta grow light bulbs are available in two fitting types to suit different lamps and light fixtures:
E27 (Edison Screw)
- How to identify: The socket has a screw thread inside — you twist the bulb in like a jar lid
- Common in: Desk lamps, floor lamps, table lamps, and many European fixtures
- Size: 27mm diameter base
B22 (Bayonet)
- How to identify: The socket has two slots on opposite sides — you push the bulb in and twist to lock
- Common in: UK ceiling light fixtures and some older UK lamps
- Size: 22mm diameter base with two pins
How to Check Your Fitting
The easiest way to check is to look at your existing bulb (if you have one):
- If it has a screw thread at the base → you need E27
- If it has two small pins on the side → you need B22
You can also look inside the empty socket — a spiral thread means E27, two vertical slots means B22.
Which Fitting for Grow Gang Products?
All of our fixtures (Stelo Clip-On, Claria Pendant, Enna Pendant, and Floor Lamp) use E27 sockets. If you're using your own lamp or ceiling fixture, check the fitting type before ordering.
Note: Our Pianta 30 (30W) is currently only available in E27. The original Pianta (18W) is available in both E27 and B22.