Do you know this cover?

Bricks-Shop

Hello,

We have found this cover, but I cannot remember if it was from a battery box or maybe a gate from Duplo. It shows 'J01-01 90503' on the back side.

Any idea?

Thank you,
Oliver.

Calibrick

Ooof that's a tough one... is there a copyright with LEGO on it (I guess I'm asking if you're sure if it's LEGO <S>)?

Hoddie

Is it this?

https://www.brickowl.com/catalog/lego-duplo-furniture-cabinet-door-3-x-3-5-with-hinge-holes-18454-62873

Bricks-Shop

@Calibrick: Yes, LEGO and C is printed on the back. :-) That's the first thing we try to search.
@Hoodie: Yes, this is the item. I can now also upload the image for the color Dark stone Gray.

Thank you both for your help.