| FSW12AR.15 12.5 mm Dia. UVFS Parallel Optical Flat Window; t=1.5mm 250-700nm | Optics | Window | Flat Window | MKS/Newport | UVFS | Circular |
| FSW14AR.15 20 mm Dia. UVFS Parallel Optical Flat Window; t=2mm 250-700nm | Optics | Window | Flat Window | MKS/Newport | UVFS | Circular |
| WIW2500-I02 25 mm Dia. White Float Round Window; t=1mm ITO 20 ohm/SQ inch | Optics | Window | Flat Window | Knight Optical | Soda Lime | Circular |
| WGW10009-AV8 100 mm Dia. White Float Round Window; t=4mm SLAR 425-680nm | Optics | Window | Flat Window | Knight Optical | Soda Lime | Circular |
| 560-6122 12.7 mm Dia. AR coated Zinc Selenide Flat Window; t=2 mm 10.6µm | Optics | Window | Flat Window | EKSMA Optics | ZnSe | Circular |
| 560-6383 38.1 mm Dia. AR coated Zinc Selenide Flat Window; t=3 mm 10.6µm | Optics | Window | Flat Window | EKSMA Optics | ZnSe | Circular |
| HO-WCBC-25-3 25 mm Dia. N-BK7 Circular Flat Window; t=6mm Single Layer MgF2 | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Circular |
| HO-WCBB-40-3 40 mm Dia. N-BK7 Circular Flat Window; t=8mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Circular |
| HO-WCSC-30-1 30 mm Dia. UVFS Circular Flat Window; t=8mm Single Layer MgF2 | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Circular |
| HO-WCSC-30-3 30 mm Dia. UVFS Circular Flat Window; t=8mm Single Layer MgF2 | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Circular |
| HO-WCSB-25-1 25 mm Dia. UVFS Circular Flat Window; t=6mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Circular |
| HO-WCSB-40-1 40 mm Dia. UVFS Circular Flat Window; t=8mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Circular |
| HO-WRBB-15-3 15 x 30 mm N-BK7 Flat Window; t=5mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Rectangular |
| HO-WRBB-20-3 20 x 35 mm N-BK7 Flat Window; t=5mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Rectangular |
| HO-WSBB-50-3 50 x 50 mm N-BK7 Flat Window; t=8mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Rectangular |
| HO-WRSB-15-3 15 x 30 mm UVFS Flat Window; t=5mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Rectangular |
| HO-WRSB-20-3 20 x 35 mm UVFS Flat Window; t=5mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Rectangular |
| ZNW15AR.20 40 mm Dia. Zinc Selenide Parallel Optical Flat Window; t=4mm 3-12µm | Optics | Window | Flat Window | MKS/Newport | ZnSe | Circular |
| 10QW20-1 25 mm Dia. UVFS High Energy Laser Line Optical Flat Window; t=3mm V-Coat 1064nm | Optics | Window | Flat Window | MKS/Newport | UVFS | Circular |
| FSW15AR.15 25 mm Dia. UVFS Parallel Optical Flat Window; t=3mm 250-700nm | Optics | Window | Flat Window | MKS/Newport | UVFS | Circular |
| G390112000 25.4 mm UVFS High Parallelism Optical Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | UVFS | Circular |
| G390113000 40 mm UVFS High Parallelism Optical Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | UVFS | Circular |
| G390115000 50 mm UVFS High Parallelism Optical Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | UVFS | Circular |
| G390166000 12.7 mm UVFS Optical Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | UVFS | Circular |
| G390151000 22.4 mm UVFS Optical Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | UVFS | Circular |
| G390156000 80 mm UVFS Optical Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | UVFS | Circular |
| G390138000 30 x 50 mm N-BK7 Optical Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Rectangular |
| G390130000 10 mm Dia. N-BK7 Optical Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Circular |
| G390020000 80 mm Dia. N-BK7 Optical Flat Window; t=10mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Circular |
| G390132322 22.4 mm Dia. N-BK7 Optical Flat Window; t=3mm 450-700nm | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Circular |
| G390069322 25.4 mm Dia. N-BK7 Optical Flat Window; t=5mm 450-700nm | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Circular |
| G390135322 63 mm Dia. N-BK7 Optical Flat Window; t=6mm 450-700nm | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Circular |
| W-BKP006 25 mm Dia. N-BK7 Precision Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Ross Optical | N-BK7 | Circular |
| W-SAP002 2.5 mm Dia. Sapphire Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Ross Optical | Al2O3 | Circular |
| W-SAP004 5 mm Dia. Sapphire Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Ross Optical | Al2O3 | Circular |
| W-CFS005 5 mm Dia. CaF2 Infrared Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Ross Optical | CaF2 | Circular |
| G390158000 20 x 30 mm UVFS Optical Flat Window; t=2.5mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | UVFS | Rectangular |
| G390192000 16 mm UVFS Optical Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | UVFS | Circular |
| G390137000 20 x 30 mm N-BK7 Optical Flat Window; t=2.5mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Rectangular |
| G390139000 22.4 mm Dia. N-BK7 Optical Flat Window; t=3.5mm Uncoated | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Circular |
| G390138322 30 x 50 mm N-BK7 Optical Flat Window; t=4mm 450-700nm | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Rectangular |
| G390068322 12.7 mm Dia. N-BK7 Optical Flat Window; t=2mm 450-700nm | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Circular |
| G390131322 16 mm Dia. N-BK7 Optical Flat Window; t=2mm 450-700nm | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Circular |
| G390133322 40 mm Dia. N-BK7 Optical Flat Window; t=6mm 450-700nm | Optics | Window | Flat Window | Qioptiq Photonics | N-BK7 | Circular |
| WGP5011 50 mm Dia. Schott Borofloat 33 Round Window; t=3.3mm Uncoated | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Circular |
| WGE2504 25 mm Dia. Germanium Round Window; t=4mm Uncoated | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WGE1803 18 mm Dia. Germanium Round Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WGE2523 23.5 x 25 mm Germanium Rectangular Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | Germanium | Rectangular |
| WHS1300 12.5 mm Dia. Sapphire Random Cut Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |
| WHS0500 5 mm Dia. Sapphire Random Cut Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |
| WSC1301 12.5 mm Dia. C-Cut Sapphire Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |
| WSC4002 40 mm Dia. C-Cut Sapphire Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |
| WBF2506 25.4 mm Dia. Barium Fluoride Round Window; t=6mm Uncoated | Optics | Window | Flat Window | Knight Optical | BAF2 | Circular |
| WBF2502 25.4 mm Dia. Barium Fluoride Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | BAF2 | Circular |
| WBF1010 10 x 10 mm Barium Fluoride Rectangular Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | BAF2 | Rectangular |
| 220-0206E 25.4 mm Dia. N-BK7 Precision Round Window; t=6 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | N-BK7 | Circular |
| 220-0566E 50.8 mm Dia. N-BK7 Precision Round Window; t=6 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | N-BK7 | Circular |
| 550-7123 12.7 mm Dia. Sapphire Window; t=3 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | Al2O3 | Circular |
| 550-7251 25.4 mm Dia. Sapphire Window; t=1 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | Al2O3 | Circular |
| 560-6250 25.4 mm Dia. Zinc Selenide Window; t=2 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | ZnSe | Circular |
| 560-6503 50.8 mm Dia. Zinc Selenide Window; t=5 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | ZnSe | Circular |
| WQK4040 40 x 40 mm N-BK7 Precision Rectangular Window; t=6mm Uncoated | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK5050 50 x 50 mm N-BK7 Precision Rectangular Window; t=8mm Uncoated | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WGP5051 50 x 50 mm Schott Borofloat 33 Rectangular Window; t=3.3mm Uncoated | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Rectangular |
| WHP1000 10 mm Dia. Schott Borofloat 33 Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Circular |
| WHP2500 25 mm Dia. Schott Borofloat 33 Round Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Circular |
| WHP2511 25 mm Dia. Schott Borofloat 33 Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Circular |
| WGE3001 30 mm Dia. Germanium Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WGE2911 11.7 x 29.5 mm Germanium Rectangular Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | Germanium | Rectangular |
| WGE3002 30 mm Dia. Germanium Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WGE1005 10 mm Dia. Germanium Round Window; t=0.5mm Uncoated | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WGE1902 19 mm Dia. Germanium Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WHS1600 16 mm Dia. Sapphire Random Cut Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |
| WHS3000 30 mm Dia. Sapphire Random Cut Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |
| WHS4000 40 mm Dia. Sapphire Random Cut Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |
| WHS5033 50 mm Dia. Sapphire Random Cut Round Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |
| WBF2500 25 mm Dia. Barium Fluoride Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | BAF2 | Circular |
| WBF2201 22 mm Dia. Barium Fluoride Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | BAF2 | Circular |
| 220-0403E 38.1 mm Dia. N-BK7 Precision Round Window; t=10 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | N-BK7 | Circular |
| 220-0503M 50.0 mm Dia. N-BK7 Precision Round Window; t=12 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | N-BK7 | Circular |
| 220-0166E 12.7 mm Dia. N-BK7 Precision Round Window; t=6 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | N-BK7 | Circular |
| 220-0236E 25.4 mm Dia. N-BK7 Precision Round Window; t=3 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | N-BK7 | Circular |
| 220-0586E 50.8 mm Dia. N-BK7 Precision Round Window; t=8 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | N-BK7 | Circular |
| 220-0586M 50.0 mm Dia. N-BK7 Precision Round Window; t=8 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | N-BK7 | Circular |
| 520-6385 38.1 mm Dia. Magnesium Fluoride Window; t=5 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | Magnesium Fluoride | Circular |
| 530-5506 50.8 mm Dia. UV grade CaF2 Window; t=6 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | CaF2 | Circular |
| 550-7124 12.7 mm Dia. Sapphire Window; t=4 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | Al2O3 | Circular |
| 550-7200 20.0 mm Dia. Sapphire Window; t=0.5 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | Al2O3 | Circular |
| 550-7201 20.0 mm Dia. Sapphire Window; t=1 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | Al2O3 | Circular |
| 560-6120 12.7 mm Dia. Zinc Selenide Window; t=2 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | ZnSe | Circular |
| 560-6121 12.7 mm Dia. Zinc Selenide Window; t=3 mm Uncoated | Optics | Window | Flat Window | EKSMA Optics | ZnSe | Circular |
| WQK1500 15 mm Dia. N-BK7 Precision Round Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK2525 25 x 25 mm N-BK7 Precision Rectangular Window; t=6mm Uncoated | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK7500 75 mm Dia. N-BK7 Precision Round Window; t=8mm Uncoated | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WHP1500 15 mm Dia. Schott Borofloat 33 Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Circular |
| WHP4000 40 mm Dia. Schott Borofloat 33 Round Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Circular |
| WHP5050 50 x 50 mm Schott Borofloat 33 Rectangular Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Rectangular |
| WGE1202 12 mm Dia. Germanium Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WHS1000 10 mm Dia. Sapphire Random Cut Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |
| WHS1500 15 mm Dia. Sapphire Random Cut Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | Al2O3 | Circular |