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Gypframe 62 JC 70 'J' Channel is a strong channel with uneven flanges for fixing GypWall Shaft studs at ceiling junctions. The 62mm 'J' channel is made of extra strong 0.7mm gauge rigidised metal, allowing for one-sided board fixing. Designed for high performance GypWall Shaft systems, it retains studs at ceiling junctions, around openings, and in deflection heads.