| NC-W-38.1-3 38.1 mm Dia. NaCl Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-50.8-5 50.8 mm Dia. NaCl Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-76.2-12 76.2 mm Dia. NaCl Flat Window; t=12mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| MF-W-25.4x2 25.4 mm Dia. MgF2 Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Magnesium Fluoride | Circular |
| MF-W-25.4x4 25.4 mm Dia. MgF2 Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Magnesium Fluoride | Circular |
| MF-W-25.4x6 25.4 mm Dia. MgF2 Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Magnesium Fluoride | Circular |
| MF-W-38.1x5 38.1 mm Dia. MgF2 Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Magnesium Fluoride | Circular |
| AL-W-6.0-0.2 6 mm Dia. Sapphire Flat Window; t=0.2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| AL-W-50.8-6 50.8 mm Dia. Sapphire Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| SI-W-25.4-1 25.4 mm Dia. Silicon Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-38.1-3 38.1 mm Dia. Silicon Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| ZnSe-W-41x3 41 mm Dia. ZnSe Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| ZnSe-W-49x3 49 mm Dia. ZnSe Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| ZnSe-W-63.5-6 63.5 mm Dia. ZnSe Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| ZnSe-W-63.5-8 63.5 mm Dia. ZnSe Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| 68-529 50 mm Dia. Silicon Protective Flat Window; t=1mm BBAR 3-5µm | Optics | Window | Flat Window | Edmund Optics | Silicon | Circular |
| 13-795 25 mm Dia. Diamond-Like Carbon (DLC) Coated; Germanium Flat Window; t=1mm BBAR 8-12µm/DLC | Optics | Window | Flat Window | Edmund Optics | Germanium | Circular |
| 34-523 10 mm Dia. Borofloat33 Protective Flat Window; t=1.1mm Hydrophobic 425-675nm | Optics | Window | Flat Window | Edmund Optics | Borofloat33 | Circular |
| 36-070 12.5 mm Dia. Borofloat33 Protective Flat Window; t=1.1mm Hydrophobic 425-675nm | Optics | Window | Flat Window | Edmund Optics | Borofloat33 | Circular |
| 36-074 75 mm Dia. Borofloat33 Protective Flat Window; t=1.1mm Hydrophobic 425-675nm | Optics | Window | Flat Window | Edmund Optics | Borofloat33 | Circular |
| WQK1501-AI1 15 mm Dia. N-BK7 Precision Round Window; t=3mm AR 630-1100nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK1000-AI1 10 mm Dia. N-BK7 Precision Round Window; t=3mm AR 630-1100nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK2525-AI1 25 x 25 mm N-BK7 Precision Rectangular Window; t=6mm AR 630-1100nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK1500-AV2 15 mm Dia. N-BK7 Precision Round Window; t=3mm AR 450-900nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK5000-AV2 50 mm Dia. N-BK7 Precision Round Window; t=6mm AR 450-900nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WGP2501-AV2 25 mm Dia. Schott Borofloat 33 Round Window; t=1.1mm AR 400-1000nm | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Circular |
| WGP1001-AV2 100 x 100 mm Schott Borofloat 33 Rectangular Window; t=1.1mm AR 400-1000nm | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Rectangular |
| WGP2503-AV2 25 mm Dia. Schott Borofloat 33 Round Window; t=2mm AR 400-1000nm | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Circular |
| WHF1500-AU1 15 mm Dia. UVFS Round Window; t=3mm AR 248-400nm | Optics | Window | Flat Window | Knight Optical | UVFS | Circular |
| ZnSe-W-25.4-4 25.4 mm Dia. ZnSe Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| ZnSe-W-25.4-6 25.4 mm Dia. ZnSe Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| ZnSe-W-38.1-4 38.1 mm Dia. ZnSe Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| 68-531 50 mm Dia. Silicon Protective Flat Window; t=2mm BBAR 3-5µm | Optics | Window | Flat Window | Edmund Optics | Silicon | Circular |
| 34-525 15 mm Dia. Borofloat33 Protective Flat Window; t=1.1mm Hydrophobic 425-675nm | Optics | Window | Flat Window | Edmund Optics | Borofloat33 | Circular |
| 36-072 25 mm Dia. Borofloat33 Protective Flat Window; t=1.1mm Hydrophobic 425-675nm | Optics | Window | Flat Window | Edmund Optics | Borofloat33 | Circular |
| WQK6501-AI1 65 mm Dia. N-BK7 Precision Round Window; t=8mm AR 630-1100nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK4040-AI1 40 x 40 mm N-BK7 Precision Rectangular Window; t=6mm AR 630-1100nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK6502-AI2 65 mm Dia. N-BK7 Precision Round Window; t=8mm AR 1050-1700nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK7575-AV2 75 x 75 mm N-BK7 Precision Rectangular Window; t=8mm AR 450-900nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK1515-AV2 15 x 15 mm N-BK7 Precision Rectangular Window; t=4mm AR 450-900nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK2525-AV2 25 x 25 mm N-BK7 Precision Rectangular Window; t=6mm AR 450-900nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WGP5050-AV2 50 x 50 mm Schott Borofloat 33 Rectangular Window; t=1.1mm AR 400-1000nm | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Rectangular |
| WGP2502-AV2 25 mm Dia. Schott Borofloat 33 Round Window; t=2mm AR 400-1000nm | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Circular |
| WHF5000-AU1 50 mm Dia. UVFS Round Window; t=4mm AR 248-400nm | Optics | Window | Flat Window | Knight Optical | UVFS | Circular |
| WGE2533 25 mm Dia. Germanium Round Window; t=3mm AR-DLC 7-14µm | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WGE1211 12.5 mm Dia. Germanium Round Window; t=1mm AR-DLC 7-14µm | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WGE7533 75 mm Dia. Germanium Round Window; t=3mm AR-DLC 7-14µm | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WZN3502 35 mm Dia. Zinc Selenide Standard Round Window; t=2mm AR 10600nm | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| SI-W-127-6 127 mm Dia. Silicon Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-203.2-10 203.2 mm Dia. Silicon Flat Window; t=10mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| ZnSe-W-13x2 13 mm Dia. ZnSe Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| ZnSe-W-25.4-3 25.4 mm Dia. ZnSe Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| ZnSe-W-76.2-6 76.2 mm Dia. ZnSe Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| 47-942 25 mm Dia. Silicon Protective Flat Window; t=3mm BBAR 3-5µm | Optics | Window | Flat Window | Edmund Optics | Silicon | Circular |
| 13-798 50 mm Dia. Diamond-Like Carbon (DLC) Coated; Germanium Flat Window; t=3mm BBAR 8-12µm/DLC | Optics | Window | Flat Window | Edmund Optics | Germanium | Circular |
| WQK5001-AI1 50 mm Dia. N-BK7 Precision Round Window; t=6mm AR 630-1100nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK1515-AI2 15 x 15 mm N-BK7 Precision Rectangular Window; t=4mm AR 1050-1700nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK2525-AI2 25 x 25 mm N-BK7 Precision Rectangular Window; t=6mm AR 1050-1700nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK5050-AI2 50 x 50 mm N-BK7 Precision Rectangular Window; t=8mm AR 1050-1700nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK4000-AV2 40 mm Dia. N-BK7 Precision Round Window; t=6mm AR 450-900nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WGP5051-AV2 50 x 50 mm Schott Borofloat 33 Rectangular Window; t=1.1mm AR 400-1000nm | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Rectangular |
| WGP5052-AV2 50 x 50 mm Schott Borofloat 33 Rectangular Window; t=2mm AR 400-1000nm | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Rectangular |
| WHF1000-AU1 10 mm Dia. UVFS Round Window; t=2mm AR 248-400nm | Optics | Window | Flat Window | Knight Optical | UVFS | Circular |
| WGE5012 50 mm Dia. Germanium Round Window; t=1mm AR 3-12µm | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WZN3004 30 mm Dia. Zinc Selenide Standard Round Window; t=4mm AR 10600nm | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WGW1500-AV2 15 mm Dia. White Float Round Window; t=1mm AR 450-900nm | Optics | Window | Flat Window | Knight Optical | Soda Lime | Circular |
| WGW2525-AV2 25 x 25 mm White Float Rectangular Window; t=1mm AR 450-900nm | Optics | Window | Flat Window | Knight Optical | Soda Lime | Rectangular |
| WGW2599-AV8 25 mm Dia. White Float Round Window; t=3mm SLAR 425-680nm | Optics | Window | Flat Window | Knight Optical | Soda Lime | Circular |
| WGW4099-AV8 40 mm Dia. White Float Round Window; t=3mm SLAR 425-680nm | Optics | Window | Flat Window | Knight Optical | Soda Lime | Circular |
| 560-6766 76.2 mm Dia. AR coated Zinc Selenide Flat Window; t=6.4 mm 10.6µm | Optics | Window | Flat Window | EKSMA Optics | ZnSe | Circular |
| 580-6134 38.1 mm Dia. AR coated Germanium Flat Window; t=4.0 mm 10.6µm | Optics | Window | Flat Window | EKSMA Optics | Germanium | Circular |
| 580-6155 50.8 mm Dia. AR coated Germanium Flat Window; t=5.0 mm 10.6µm | Optics | Window | Flat Window | EKSMA Optics | Germanium | Circular |
| WZSA-25.4C03-10600A 25.4 mm Dia. ZnSe Flat Window for Infrared Laser; t=3mm 10.6µm | Optics | Window | Flat Window | OptoSigma | ZnSe | Circular |
| WSQNAHP-50C05-10-266 50 mm Dia. UVFS Flat Window for High Power Laser; t=5mm 266nm | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| WSQNAHP-30C03-10-355 30 mm Dia. UVFS Flat Window for High Power Laser; t=3mm 355nm | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| WSQNAHP-30C03-10-266 30 mm Dia. UVFS Flat Window for High Power Laser; t=3mm 266nm | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| HO-WCBC-15-3 15 mm Dia. N-BK7 Circular Flat Window; t=5mm Single Layer MgF2 | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Circular |
| HO-WCBB-15-1 15 mm Dia. N-BK7 Circular Flat Window; t=5mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Circular |
| HO-WCBB-25-1 25 mm Dia. N-BK7 Circular Flat Window; t=6mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Circular |
| HO-WCBB-30-3 30 mm Dia. N-BK7 Circular Flat Window; t=8mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Circular |
| HO-WCBB-50-3 50 mm Dia. N-BK7 Circular Flat Window; t=8mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Circular |
| HO-WCSC-40-1 40 mm Dia. UVFS Circular Flat Window; t=8mm Single Layer MgF2 | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Circular |
| HO-WCSC-50-3 50 mm Dia. UVFS Circular Flat Window; t=8mm Single Layer MgF2 | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Circular |
| HO-WCSB-20-3 20 mm Dia. UVFS Circular Flat Window; t=5mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Circular |
| HO-WCSB-25-3 25 mm Dia. UVFS Circular Flat Window; t=6mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Circular |
| HO-WRBC-10-3 10 x 20 mm N-BK7 Flat Window; t=5mm Single Layer MgF2 | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Rectangular |
| HO-WSBC-50-3 50 x 50 mm N-BK7 Flat Window; t=8mm Single Layer MgF2 | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | N-BK7 | Rectangular |
| HO-WSSC-25-1 25 x 25 mm UVFS Flat Window; t=6mm Single Layer MgF2 | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Rectangular |
| HO-WSSB-50-1 50 x 50 mm UVFS Flat Window; t=8mm BBAR 400-700nm | Optics | Window | Flat Window | Holmarc Opto-Mechatronics | UVFS | Rectangular |
| 14DM-1-AR14-0-1 25.4 mm Dia. N-BK7 AR coated Flat Window; t=6mm 1030nm | Optics | Window | Flat Window | Standa | N-BK7 | Circular |
| ZNW12AR.20 20 mm Dia. Zinc Selenide Parallel Optical Flat Window; t=2mm 3-12µm | Optics | Window | Flat Window | MKS/Newport | ZnSe | Circular |
| ZNW13AR.20 25 mm Dia. Zinc Selenide Parallel Optical Flat Window; t=3mm 3-12µm | Optics | Window | Flat Window | MKS/Newport | ZnSe | Circular |
| 3MQ12-01UF.AR1 30 mm Dia. UVFS FemtoOptics Ultrathin AR-coated Optical Flat Window; t=1mm 620-980nm | Optics | Window | Flat Window | MKS/Newport | UVFS | Circular |
| 05QW20-4 12.5 mm Dia. UVFS High Energy Laser Line Optical Flat Window; t=3mm V-Coat 266nm | Optics | Window | Flat Window | MKS/Newport | UVFS | Circular |
| WGW100100-AV8 100 x 100 mm White Float Rectangular Window; t=3mm SLAR 425-680nm | Optics | Window | Flat Window | Knight Optical | Soda Lime | Rectangular |
| WGW5000-AV8 50 mm Dia. White Float Round Window; t=3mm SLAR 425-680nm | Optics | Window | Flat Window | Knight Optical | Soda Lime | Circular |
| WGW6500-AV8 65 mm Dia. White Float Round Window; t=3mm SLAR 425-680nm | Optics | Window | Flat Window | Knight Optical | Soda Lime | Circular |
| WGW6599-AV8 65 mm Dia. White Float Round Window; t=3mm SLAR 425-680nm | Optics | Window | Flat Window | Knight Optical | Soda Lime | Circular |
| WZSA-50.8C03-10600A 50.8 mm Dia. ZnSe Flat Window for Infrared Laser; t=3mm 10.6µm | Optics | Window | Flat Window | OptoSigma | ZnSe | Circular |
| WZSA-40C04-10-10600 40 mm Dia. ZnSe Flat Window for Infrared Laser; t=4mm 10.6µm | Optics | Window | Flat Window | OptoSigma | ZnSe | Circular |