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Description The Birtley TF50HD Heavy Duty Timber Frame Lintel is designed for use in timber frame construction with a 50-65mm cavity and 100mm outer leaf. This lintel provides enhanced load-bearing capacity, making it suitable for heavy-duty applications. It features Birtley’s Supergalv coating, which offers superior protection through hot-dip galvanizing after fabrication, ensuring the highest level of zinc coverage. Key Features: Supergalv Coating : Provides up to 50% more zinc protection compared to other approved coatings. Post-fabrication Galvanizing : Ensures that no surface is left with inferior protection, offering enhanced corrosion resistance. Heavy Duty Design : Suitable for applications requiring higher structural strength.