>>1717801Heavy duty ones will have more planks per pallet like this, the standard ones have much bigger gaps between the horizontals and might have smaller supports. Don't buy them, go to a local roof tile shop and aks if they've got some spare, or cruise around industrial estates at night and see if there are any lying about. I can't stress enough the need to find one's that only had building materials on them, my brother in law was tearing sheets of skin off his hands for days after handling ones that were covered in "some sticky resin looking stuff" but if you find clean ones they're a great source of free, straight, uniform pieces of wood, not to mention all the free nails. Happy hunting anon.
