| Ge-W-200-7 200 mm Dia. Germanium Flat Window; t=7mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| KB-W-50.8x4 50.8 mm Dia. KBr Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KB-W-95x35 95 mm Dia. KBr Flat Window; t=35mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-25.4-5 25.4 mm Dia. KCl Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-38.1-6 38.1 mm Dia. KCl Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-50.8-4 50.8 mm Dia. KCl Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-50-6 50.8 mm Dia. KCl Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-50.8-1 50.8 mm Dia. NaCl Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-50.8-4 50.8 mm Dia. NaCl Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-50-6 50.8 mm Dia. NaCl Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| MF-W-12.7x1 12.7 mm Dia. MgF2 Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Magnesium Fluoride | Circular |
| MF-W-50.8x3 50.8 mm Dia. MgF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Magnesium Fluoride | Circular |
| MF-W-50.8x5 50.8 mm Dia. MgF2 Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Magnesium Fluoride | Circular |
| MF-W-50.8x6 50.8 mm Dia. MgF2 Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Magnesium Fluoride | Circular |
| AL-W-12.7-0.5 12.7 mm Dia. Sapphire Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| AL-W-12.7-1 12.7 mm Dia. Sapphire Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| AL-W-38.1-3 38.1 mm Dia. Sapphire Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| AL-W-63.5-3 63.5 mm Dia. Sapphire Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| AL-W-90-3 90 mm Dia. Sapphire Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| SI-W-12.7-1 12.7 mm Dia. Silicon Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-12.7-2 12.7 mm Dia. Silicon Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| 47-940 10 mm Dia. Silicon Protective Flat Window; t=1.5mm BBAR 3-5µm | Optics | Window | Flat Window | Edmund Optics | Silicon | Circular |
| 68-526 25 mm Dia. Silicon Protective Flat Window; t=2mm BBAR 3-5µm | Optics | Window | Flat Window | Edmund Optics | Silicon | Circular |
| 36-068 5 mm Dia. Borofloat33 Protective Flat Window; t=1.1mm Hydrophobic 425-675nm | Optics | Window | Flat Window | Edmund Optics | Borofloat33 | Circular |
| 34-528 75 mm Dia. Borofloat33 Protective Flat Window; t=1.1mm Hydrophobic 425-675nm | Optics | Window | Flat Window | Edmund Optics | Borofloat33 | Circular |
| 88-356 5 mm Dia. Borofloat33 Protective Flat Window; t=1.1mm Hydrophobic 425-675nm | Optics | Window | Flat Window | Edmund Optics | Borofloat33 | Circular |
| WQK4001-AI1 40 mm Dia. N-BK7 Precision Round Window; t=6mm AR 630-1100nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK5050-AI1 50 x 50 mm N-BK7 Precision Rectangular Window; t=8mm AR 630-1100nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WQK7502-AI2 75 mm Dia. N-BK7 Precision Round Window; t=8mm AR 1050-1700nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK1502-AI2 15 mm Dia. N-BK7 Precision Round Window; t=3mm AR 1050-1700nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK2502-AI2 25 mm Dia. N-BK7 Precision Round Window; t=4mm AR 1050-1700nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK4002-AI2 40 mm Dia. N-BK7 Precision Round Window; t=6mm AR 1050-1700nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WQK5050-AV2 50 x 50 mm N-BK7 Precision Rectangular Window; t=8mm AR 450-900nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Rectangular |
| WGP1002-AV2 100 x 100 mm Schott Borofloat 33 Rectangular Window; t=2mm AR 400-1000nm | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Rectangular |
| CaF2-W-38.1x4 38.1 mm Dia. CaF2 Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-w-41x3 41 mm Dia. CaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-50.8x6 50.8 mm Dia. CaF2 Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-63.5x6 63.5 mm Dia. CaF2 Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-63.5x8 63.5 mm Dia. CaF2 Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-76.2x8 76.2 mm Dia. CaF2 Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-170x10 170 mm Dia. CaF2 Flat Window; t=10mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| BF-W-32x3 32 mm Dia. BaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-32x3-Drilled 32 mm Dia. BaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BaF2-W-41x3 41 mm Dia. BaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-63.5-12 63.5 mm Dia. BaF2 Flat Window; t=12.7mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| FS-w-25.4-2 25.4 mm Dia. UVFS Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| GE-W-25.0-1 25 mm Dia. Germanium Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-32x3 32 mm Dia. Germanium Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-38.1-5 38.1 mm Dia. Germanium Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-58-2 58 mm Dia. Germanium Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| KB-W-38.1x5 38.1 mm Dia. KBr Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KB-W-76.2x12 76.2 mm Dia. KBr Flat Window; t=12mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-12.7-2 12.7 mm Dia. KCl Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-25.4-3 25.4 mm Dia. KCl Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-38.1-5 38.1 mm Dia. KCl Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-76.2-12 76.2 mm Dia. KCl Flat Window; t=12mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-12.7-2 12.7 mm Dia. NaCl Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| 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 |