I need to send a parcel which is 22kg and measurments are 350mm x 350mm x 500mm but it's got to be packaged up so it's very secure and undamagable....I'm returning a faulty home cinema sub woofer still under warranty, so they pay the postage luckily.
But need help on best way to do this? Where do I get a cardboard box that strong and the right size, and whats best to surround it with ?