Lens Savers® Premium grade protection windows are suitable for most YAG applications.  Windows are available with and without anti-reflective (AR) coatings.  Uncoated windows will transmit 92% of the available energy at 1.064 microns.  Coated windows transmit in excess of 99% of available energy at 1.064 microns. 
Material: BK-7
Tolerances - Diameter +0.00/-0.25mm/Thickness +0.00/-0.25mm
Flatness: 1/5 wave per inch at 632.8nm over clear aperture
Parallelism: Less than 3 arc min
Surface: 60-40
Clear aperture: 90% of diameter
AR coating: Less than 0.5% reflection/side 1064nm

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0002-6520 N/A BK-7 Lens Savers® Premium YAG Windows - 20mm x 1mm, Coated Add To Cart
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0002-6514 N/A BK-7 Lens Savers® Premium YAG Windows - 20mm x 1mm, Uncoated Add To Cart
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0002-6521 N/A BK-7 Lens Savers® Premium YAG Windows - 20mm x 2mm, Coated Add To Cart
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0002-6515 N/A BK-7 Lens Savers® Premium YAG Windows - 20mm x 2mm, Uncoated Add To Cart
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0002-6522 N/A BK-7 Lens Savers® Premium YAG Windows - 25mm x 2mm, Coated Add To Cart
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0002-6516 N/A BK-7 Lens Savers® Premium YAG Windows - 25mm x 2mm, Uncoated Add To Cart
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0002-6416 N/A BK-7 Lens Savers® Premium YAG Windows - 25.4mm x 1.5mm, Coated Add To Cart
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0002-6415 N/A BK-7 Lens Savers® Premium YAG Windows - 25.4mm x 1.5mm, Uncoated Add To Cart
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0002-6523 N/A BK-7 Lens Savers® Premium YAG Windows - 25.4mm x 2mm, Coated Add To Cart
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0002-6517 N/A BK-7 Lens Savers® Premium YAG Windows - 25.4mm x 2mm, Uncoated Add To Cart
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0002-6524 N/A BK-7 Lens Savers® Premium YAG Windows - 27.9mm x 2mm, Coated Add To Cart
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0002-6518 N/A BK-7 Lens Savers® Premium YAG Windows - 27.9mm x 2mm, Uncoated Add To Cart
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0002-6525 N/A BK-7 Lens Savers® Premium YAG Windows - 31.75mm x 2mm, Coated Add To Cart
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0002-6519 N/A BK-7 Lens Savers® Premium YAG Windows - 31.75mm x 2mm, Uncoated Add To Cart
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0002-6414 N/A BK-7 Lens Savers® Premium YAG Windows - 38.1mm x 2mm, Coated Add To Cart
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0002-6413 N/A BK-7 Lens Savers® Premium YAG Windows - 38.1mm x 2mm, Uncoated Add To Cart
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