Frequently Asked Questions

The L2 Metal Foil Mounted Aperture is made of copper foil, blackened on one side.

The aperture is 0.002mm (2μm) wide and 1mm long.

The available mount diameters are 12.7mm, 16mm, and 25mm.

The mount is made of black anodised aluminium.

Other products in the L series include L5, L10, L25, L50, L100, and L250 Mounted Rectangular Slits with varying dimensions.

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