User Manual Russell Hobbs RHM2031 20 Litre Digital Microwave

240cm or 9.1/2” all my splatter catchers are too big for this turntable. Still looking. By the way, it has a combination/grill button and not two separate buttons, thais. And you cannot put anything metal inside.

Yes I've grilled loads of things in mine.

No it has an enamel type coating on the inside, but it only requires a quick wipe with a damp cloth to keep it clean.
Make sure you leave the door open after use to let any steam out, if not it will collect under the turntable.
It's a really good microwave.