19.7 We will have no liability with regard to any claim in respect of which you have not complied with the warranty claim procedure in the Warranty Conditions in clause 19.2. ". 4.33 You shall provide us with a fully completed and signed proforma installation / site ready certificate ("Certificate" ) prior to the required installation date (which shall be at our sole discretion) where we are arranging the installation of WS Goods supplied to you.
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