The lines that belong together
Order tubes on their own line. Do not add a carton and a tube for the same roll.
Tubes do not need void fill in the way a loose carton does. They need a close length.
The line that stays separate
a deep carton stays on its own order line. A book wrap is for a flat pack. A tube is for a cylinder. They are not two sizes of the same thing.
Postal tubes is the range Wholesale Packaging uses for postal tubes.
One basket
Tubes are their own range. A square carton crushes a roll or forces you to fill the corners.
At Wholesale Packaging, Postal tubes does not change the cutoff. Orders by 3pm leave the same day. Under £50 ex VAT the delivery is still available. It is just not the free threshold.
Open Postal tubes when you already know this line. Tubes are sold as that length. Check the pack count before you treat one tube as the product. Wholesale Packaging will still dispatch an order placed by 3pm on the same day.