What weight can a pull out front end double bed take?

by Stephen
(Newcastle)

Hi All can anyone give me a ball park figure of what weight a double front end pull out bed can take, as we have just got a new Elddis Affinity 550, and we would like to have our friends come away with us at some point, but as my friends wife is a large lady.

I would not like to worry about the bed slats getting damaged and have them in an embarrassing heap on the floor. It`s a bit of a delicate problem, as we really want to have them come and stay with us.

thanks to all in advance.