4 x R7 400W= 500w bightness Eveready branded Linear lamps warm white 118mm.

2 ENERGIZER R7 Linear 120w=150w 78MM Eco Halogen Dimmable Warm White Bulbs

Electrobright Ltd

£3.49

10 x Energizer LINEAR LOW ENERGY 118mm R7s 3150 Lumens Halogen Bulb 240V 160W Energy ( 200W Brightness ) Dimmable

Electrobright Ltd

£18.00

10 x Energizer LINEAR 78mm R7s 2250 Lumens Halogen Bulbs 240V 120W ENERGY ( 150W Brightness) Dimmable Warm White Low Energy Low cost LED alternative

Electrobright Ltd

£14.99