A tender box is a mailbox used to receive the physical tender or bid documents, or a digital equivalent.Electronics Corporation of India Limited, User Manual - Tender Box Opening, Version 2.0, accessed 5 August 2021 When a tender or bid is being called, a tender or bid number is usually issued as a reference number for the tender box. The tender box would be open for interested parties to submit their proposals for the duration of the bid or tender. After the closing date, the tender box is closed and sealed and can only be opened by either the tender or bid evaluation committee or a member of the procurement department with two witnesses.
