§1Model wording
11.1 Convenience. Either party may terminate on [90] days' written notice.
11.2 Cause. Either party may terminate on [30] days' notice if the other materially breaches and does not cure within that period. Failure to meet Clause 6.3 targets for [3] consecutive months is a material breach.
11.3 Transition. After any notice of termination, the Seller shall continue to supply at the contract Price for up to [60] days after the termination date if the Buyer asks.
Values in [square brackets] are yours to set. Have counsel review before use; this is not legal advice.
§2Negotiation notes
A transition period (11.3) costs the supplier little and protects you from a supplier walking away in a tight market.
Plan the exit before you need it. The clause should say what happens to pallets the supplier has built for you, to any pallets or cores of yours at the supplier's yard, and to outstanding credits.
A notice period that matches how long it takes to qualify a new supplier protects both sides. Check it against the time your last RFQ actually took, not the time you hoped it would take.