Outback Gas Tank Cover To Fit 7kg Bottle Silver/Grey Nylon GardenXL Online Price £7.99 Free UK Delivery Nylon Cover To Fit: Any Gas Bottles Up To 7kg Silver grey is now the preferred option for barbecue covers. More pleasing to the eye in the garden, the covers do not fade like the old black covers. Black covers fade to red and grey blotches within a year and look unsightly very quickly. Although the silver grey covers will still breakdown the same, out in all weathers, they look better for much longer. Quantity: