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As a rough guide to waterproofness - 5000mm is generally rainproof but won't necessarily stand up well to torrential rain. Around 15000 should be fine in that context. If you go higher than that th...
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As a rough guide to waterproofness - 5000mm is generally rainproof but won't necessarily stand up well to torrential rain. Around 15000 should be fine in that context. If you go higher than that th...