Builder and Company entered into a contract for the construction of a shopping center for $2.5 million. The contract provided that Company would make progress paymentsi.e., partial payments as construction progressed. Builder finished construction of the shopping mall, except for one minor piece. Because Builder was angry with Company over a dispute unrelated to this transaction, Builder intentionally did not install the doors at the front of the shopping center. Company can have another contractor install the doors for only $500. Company refuses to pay Builder the unpaid balance of $400,000. Is Builder's breach so material that Company can withhold performance? Explain your reasoning.

This is for my contracts law class.