At checkout you may choose Arrange your own freight. No shipping is charged, and your carrier collects the lot from the supplier's warehouse within 14 days of payment.
The bill of lading is the delivery record
The bill of lading signed at loading is the delivery record. The 5-business-day acceptance window counts from the collection date, and count claims are settled against what the driver counted and noted there.
How long do I have to collect?
Your carrier collects within 14 days of payment.
When does my acceptance window start?
On the collection date. From then you have 5 business days to check the lot and raise an issue.