div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader043vdocumentssitereader043viewer20220331225eab33ce214a201bf85b4062html5page1jpg target=_blank img data-url=bs-6375-part-12004-perforrnance-of-windows-and-doors-part-1-classification-forhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: €¦ · BS 6375 Part 1:2004 Perforrnance of windows and doors - Part 1: Classification for weathertightness and guidance on selection and specification The following results were loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentssitereader043viewer20220331225eab33ce214a201bf85b4062html5thumbnails1jpg width=140 height=200 adivdiv