FRONTIER BUILDING PRODUCTS PACIFIC, INC. (#2026169)

Page 4 of 5 © Insurance Services Office, Inc., 2012 CX 00 01 04 13 At our request, the first Named Insured will furnish us, as soon as practicable, with a complete copy of any "controlling underlying insurance" and any subsequently issued endorsements or policies which may in any way affect the insurance provided under this Coverage Part. 5. Cancellation a. The first Named Insured shown in the Declarations may cancel this policy by mailing or delivering to us advance written notice of cancellation. b. We may cancel this policy by mailing or delivering to the first Named Insured written notice of cancellation at least: (1) 10 days before the effective date of cancellation if we cancel for nonpayment of premium; or (2) 30 days before the effective date of cancellation if we cancel for any other reason. c. We will mail or deliver our notice to the first Named Insured's last mailing address known to us. d. Notice of cancellation will state the effective date of cancellation. The policy period will end on that date. e. If this policy is cancelled, we will send the first Named Insured any premium refund due. If we cancel, the refund will be pro rata. If the first Named Insured cancels, the refund may be less than pro rata. The cancellation will be effective even if we have not made or offered a refund. f. If notice is mailed, proof of mailing will be sufficient proof of notice. 6. Changes This Coverage Part contains all the agreements between you and us concerning the insurance afforded. The first Named Insured is authorized by all other insureds to make changes in the terms of this Coverage Part with our consent. This Coverage Part's terms can be amended or waived only by endorsement. 7. Maintenance Of/Changes To Controlling Underlying Insurance Any "controlling underlying insurance" must be maintained in full effect without reduction of coverage or limits except for the reduction of aggregate limits in accordance with the provisions of such "controlling underlying insurance" that results from "injury or damage" to which this insurance applies. Such exhaustion or reduction is not a failure to maintain "controlling underlying insurance". Failure to maintain "controlling underlying insurance" will not invalidate insurance provided under this Coverage Part, but insurance provided under this Coverage Part will apply as if the "controlling underlying insurance" were in full effect. The first Named Insured must notify us in writing, as soon as practicable, if any "controlling underlying insurance" is cancelled, not renewed, replaced or otherwise terminated, or if the limits or scope of coverage of any "controlling underlying insurance" is changed. 8. Other Insurance a. This insurance is excess over, and shall not contribute with any of the other insurance, whether primary, excess, contingent or on any other basis. This condition will not apply to insurance specifically written as excess over this Coverage Part. When this insurance is excess, if no other insurer defends, we may undertake to do so, but we will be entitled to the insured's rights against all those other insurers. b. When this insurance is excess over other insurance, we will pay only our share of the "ultimate net loss" that exceeds the sum of: (1) The total amount that all such other insurance would pay for the loss in the absence of the insurance provided under this Coverage Part; and (2) The total of all deductible and self-insured amounts under all that other insurance. 9. Premium Audit a. We will compute all premiums for this Coverage Part in accordance with our rules and rates. b. If this policy is auditable, the premium shown in this Coverage Part as advance premium is a deposit premium only. At the close of each audit period, we will compute the earned premium for that period and send notice to the first Named Insured. The due date for audit premium is the date shown as the due date on the bill. If the sum of the advance and audit premiums paid for the policy period is greater than the earned premium, we will return the excess to the first Named Insured. c. The first Named Insured must keep records of the information we need for premium computation, and send us copies at such times as we may request. Docusign Envelope ID: AA9A7CC3-A9B9-47D8-A802-F89481667D21