The Keystone HD/K-90 4200mm is a heavy-duty cavity wall lintel designed to support openings with cavity widths of 90-105mm in both inner and outer leaf blockwork. It is specifically engineered to handle heavy loads, making it suitable for a variety of demanding construction projects.

Features:

• The Keystone HD/K-90 4200mm is constructed from high-grade galvanized steel, ensuring exceptional strength and durability. This makes it ideal for supporting heavy loads over large openings.
• The lintel’s design accommodates cavity widths ranging from 90mm to 105mm, providing versatility for various structural applications.
• The lintel can be used with both inner and outer leaf blockwork or stonework.
• The lintel is designed for straightforward installation, ensuring efficient and cost-effective construction processes.

Technical data:

• Brand - Keystone
• Range - HD/K-90
• Product Type - Heavy Load Cavity Lintel
• Material - Mild Steel
• Finish - Galvanised
• Thickness - 3.2mm
• Height - 203mm
• Width - 283mm
• Length - 4200mm
• Cavity Range - 90-105mm
• Outer Leaf - 102mm
• Inner Leaf - 100mm
• Total UDL kN 3:1 - 33
• Total UDL kN 19:1 - 28

Standards & Certifications:

• Have been tested as a composite unit with surrounding masonry, built in accordance with BS EN 1996-2:2006. Structural Performance in accordance with the requirements of standards BS EN 846-9:2016 and BS EN 845-2:2013+A1:2016.
• Fire Performance in accordance with BS 476: Part20: 1987.
• BBA Approval Inspection Testing Certification 98/3493

Please Note:

• The Keystone Cavity Lintel HD/K-90 4200mm should be installed by a qualified professional.
• The lintel should not be overloaded.