Phase Sign-Offs means; (i) all applicable Buildings Department inspection sign-offs (including but not limited to Buildings Department Post Permit TR-1, Equipment Use Permits, elevator inspections and sign-offs, and plumbing sign-offs, and compliance with the terms and provisions of Article 26 of this Lease regarding ACM insofar as the same relate to the Phase or Phases in question) which may be necessary in connection with the relevant Phase; provided, however, that Landlord shall not be required to obtain the Buildings Department electrical sign-off or Fire Department inspection sign-offs in connection with any Phase of the Tenant’s Work, provided that (x) Landlord has timely applied for such sign-offs and timely responded to any objections raised, and (y) the Architect or Landlord’s engineer certifies to the best of its knowledge, having exercised due diligence, the Phase of the Lease complies with the Buildings Department and the Fire Department requirements (with respect to items for which Buildings Department and Fire Department shall accept self- certification) and that the fire alarm system is operational as designed in the Final Plans insofar as it relates to the Phase(s) in question (provided, however, Landlord shall remain responsible for a fully functioning fire alarm system until Landlord receives final Fire Department sign- offs); and (ii) a certified air balancing report for the Phase(s) in question has been approved by Landlord’s engineer as being in conformance with the Final Plans.