National Masonry 200 Series 20.21A Deep Channel Corner (Corner Knockout) 390x190x190mm

National Masonry manufactures concrete masonry products for residential and commercial construction across Australia. Its 200 Series Grey Block range includes standard and specialised masonry units, with knockout and corner configurations designed to support reinforced masonry construction. The 20.21A forms part of this coordinated system, combining high-strength concrete construction with a purpose-designed corner format for practical masonry wall detailing.

Features:

• Deep channel corner concrete masonry block
• Knockout bond corner configuration
• Biscuitless knockout design
• Purpose-designed corner profile
• Natural Grey concrete appearance
• Part of the National Masonry 200 Series

• Purpose-designed corner format simplifies construction at masonry wall intersections

• Knockout configuration provides greater flexibility for reinforced masonry construction
• Biscuitless design reduces unnecessary components and associated site mess
• High-strength concrete construction supports dependable masonry performance
• Recycled fly ash content reduces reliance on conventional raw materials
• Integrates with other 200 Series units for coordinated masonry wall construction