div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: · 16 17 18 The windows shall be glazed using hermetically sealed flat double glazing units manufactured in accordance with BS 5713 1979 Specification for hermetically sealed src=https:reader034fdocumentsusreader034viewer20220422005e9fd8fe8f04400f5d7129echtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: · 16 17 18 The windows shall be glazed using hermetically sealed flat double glazing units manufactured in accordance with BS 5713 1979 Specification for hermetically sealed src=https:reader034fdocumentsusreader034viewer20220422005e9fd8fe8f04400f5d7129echtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: · 16 17 18 The windows shall be glazed using hermetically sealed flat double glazing units manufactured in accordance with BS 5713 1979 Specification for hermetically sealed src=https:reader034fdocumentsusreader034viewer20220422005e9fd8fe8f04400f5d7129echtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: · 16 17 18 The windows shall be glazed using hermetically sealed flat double glazing units manufactured in accordance with BS 5713 1979 Specification for hermetically sealed src=https:reader034fdocumentsusreader034viewer20220422005e9fd8fe8f04400f5d7129echtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: · 16 17 18 The windows shall be glazed using hermetically sealed flat double glazing units manufactured in accordance with BS 5713 1979 Specification for hermetically sealed...