heat cable on melamine rack?

can my heat cable by directly touching the melamine or sterilite container? or do I need to leave space for ventilation as you would for a glass aquarium?

I have used heat cable touching both no problems. Make sure you use a tstat tho...

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of course, thanks for your help :)

I actually have also put aluminium tape over it to let the tub slide easier. The flame retardant coating on the cable kinda sticks to the plastic tub a little...

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