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Description The Birtley HD140/70/100 is a heavy duty steel cavity wall lintel is built to withstand higher load demands, it offers robust structural support and long-term durability. It complies with EN845-2:2013 standards and is hot dip galvanized after fabrication. Key Features: Hot Dip Galvanized : 65 micron zinc coating to EN1461:2009 for superior corrosion resistance. Optional U2K Galvanizing : 150 micron zinc thickness available for enhanced protection. Material : High-strength S275J0 steel, conforming to EN10025-1:2004 . Stainless Steel Option : For environments requiring enhanced resistance to corrosion. Fully Insulated Cavity : Optimizes thermal efficiency. No Baseplate : Reduces thermal bridging, improving energy performance.