G4

The G4 is a 2-pin cap with 4mm pin spread (centre to centre), with each pin being 0.7mm in diameter. The cap has a flattened glass base, with no cut grip channel.

The G4 cap is used on some MR11 reflectors and many halogen capsules or LED retrofit equivalents.

Alternative names:

None.

Bulb types:

MR11 Reflector, Halogen Capsules (including many ‘M’ Class Display Lamps), LED Capsules.

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