The Aluminium tape is used to seal the top end of the polycarbonate sheets.
It is available in widths suitable for 10,16,25 or 35mm polycarbonate.
Choose the metre length you require.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Omega Build is consulted before specifying.
Omega Build hasn't formatted technical specifications for Grey M4 gable end cap yet.
Please check out the similar products section for alternatives. Hint: products with have technical specifications.