Dual fuel cooker freestanding cooker standard width 90 cm energy rating a hob type gas capacity 91 litre heating types fan assisted oven conventional defrost grill bottom heat features oven light controls rotary functions timer safety feature flame safety device number of burnerszones 5 size large number of ovens 2 width 896 cm height 90 cm depth 60 cm colour silver manufacturer specific features easy clean enamel second oven capacity