| AL-W-50.8-5 50.8 mm Dia. Sapphire Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| AL-W-63.5-6 63.5 mm Dia. Sapphire Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| SI-W-25.4-2 25.4 mm Dia. Silicon Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-25.4-5 25.4 mm Dia. Silicon Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-38.1-5 38.1 mm Dia. Silicon Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-50.8-5 50.8 mm Dia. Silicon Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-50.8-6 50.8 mm Dia. Silicon Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-63.5-6 63.5 mm Dia. Silicon Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| ZnSe-W-12.7-2 12.7 mm Dia. ZnSe Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| ZnSe-W-25.4-2 25.4 mm Dia. ZnSe Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| CaF2-W-25.4x1 25.4 mm Dia. CaF2 Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-25.4x4 25.4 mm Dia. CaF2 Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-50.8x4 50.8 mm Dia. CaF2 Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-50.8x5 50.8 mm Dia. CaF2 Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-101.6x10 101.6 mm Dia. CaF2 Flat Window; t=10mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| BF-W-25.4-1 25.4 mm Dia. BaF2 Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-101.6-8 101.6 mm Dia. BaF2 Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| FS-w-63.5-6 63.5 mm Dia. UVFS Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| FS-w-63.5-8 63.5 mm Dia. UVFS Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| GE-W-10-1 10 mm Dia. Germanium Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-25.4-3 25.4 mm Dia. Germanium Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-38.1-1 38.1 mm Dia. Germanium Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-50.8-3 50.8 mm Dia. Germanium Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-63.5-3 63.5 mm Dia. Germanium Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| G-W-165-8 165 mm Dia. Germanium Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| KB-W-25.4x3 25.4 mm Dia. KBr Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KB-W-25.4x4 25.4 mm Dia. KBr Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KB-W-38.1x3 38.1 mm Dia. KBr Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KB-W-101.6x12 101.6 mm Dia. KBr Flat Window; t=12.7mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-38.1-3 38.1 mm Dia. KCl Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-25.4-2 25.4 mm Dia. NaCl Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-25.4-6 25.4 mm Dia. NaCl Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-63.5-6 63.5 mm Dia. NaCl Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-38.5x19.5x4 38.5 x 19.5 mm NaCl Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Rectangular |
| AL-W-90-6 90 mm Dia. Sapphire Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| SI-W-152.4-6 152.4 mm Dia. Silicon Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-18.5x18.5x0.4 18.5 x 18.5 mm Silicon Flat Window; t=0.4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Rectangular |
| ZnSe-W-38.1-3 38.1 mm Dia. ZnSe Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| CaF2-W-25.4x2 25.4 mm Dia. CaF2 Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-38.1x1 38.1 mm Dia. CaF2 Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-38.1x2 38.1 mm Dia. CaF2 Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| BF-W-12.7-2 12.7 mm Dia. BaF2 Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-38.1-3 38.1 mm Dia. BaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-38.1-4 38.1 mm Dia. BaF2 Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BaF2-W-49x3 49 mm Dia. BaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| FS-w-25.4-1 25.4 mm Dia. UVFS Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| FS-w-50.8-3 50.8 mm Dia. UVFS Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| FS-w-50.8-5 50.8 mm Dia. UVFS Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| GE-W-13x2 13 mm Dia. Germanium Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-25.4-2 25.4 mm Dia. Germanium Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-38.1-4 38.1 mm Dia. Germanium Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-63.5-6 63.5 mm Dia. Germanium Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| Ge-W-101.6-8 101.6 mm Dia. Germanium Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| KB-W-12.7x3 12.7 mm Dia. KBr Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KBr-W-32x3 32 mm Dia. KBr Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KB-W-63.5x8 63.5 mm Dia. KBr Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KB-W-76.2x8 76.2 mm Dia. KBr Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KB-W-101.6x15 101.6 mm Dia. KBr Flat Window; t=15mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-25.4-4 25.4 mm Dia. KCl Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KCl-W-32x3-Drilled 32 mm Dia. KCl Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-63.5-8 63.5 mm Dia. KCl Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-76.2-8 76.2 mm Dia. KCl Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-76.2-8 76.2 mm Dia. NaCl Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-45x20x6 45 x 20 mm NaCl Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Rectangular |
| MF-W-25.4x5 25.4 mm Dia. MgF2 Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Magnesium Fluoride | Circular |
| AL-W-25.4-2 25.4 mm Dia. Sapphire Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| AL-W-76.2-3 76.2 mm Dia. Sapphire Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| AL-W-76.2-6 76.2 mm Dia. Sapphire Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Al2O3 | Circular |
| SI-W-25.4-4 25.4 mm Dia. Silicon Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-38.1-1 38.1 mm Dia. Silicon Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| SI-W-38.1-4 38.1 mm Dia. Silicon Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Silicon | Circular |
| ZnSe-W-76.2-8 76.2 mm Dia. ZnSe Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | ZnSe | Circular |
| WZN1010 10 x 10 mm Zinc Sulphide Multispectral (clear) Rectangular Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS | Rectangular |
| WZN7003 70 mm Dia. Zinc Selenide Standard Round Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN4002 40 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN3802 38 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN3515 35 mm Dia. Zinc Selenide Standard Round Window; t=1.5mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN3200 32 mm Dia. Zinc Selenide Standard Round Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN3002 30 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2550 25.4 mm Dia. Zinc Sulphide FLIR Round Window; t=5mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS | Circular |
| WZN2604 25.4 mm Dia. Zinc Selenide Standard Round Window; t=4mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2601 25.4 mm Dia. Zinc Selenide Standard Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2540 25 mm Dia. Zinc Selenide Standard Round Window; t=4mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2530 25 mm Dia. Zinc Selenide Standard Round Window; t=3mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2501 25 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2500 25 mm Dia. Zinc Selenide Standard Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2205 22 mm Dia. Zinc Selenide Standard Round Window; t=0.5mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2005 20 mm Dia. Zinc Selenide Standard Round Window; t=5mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2002 20 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN2000 20 mm Dia. Zinc Selenide Standard Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN1802 18 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN1801 18 mm Dia. Zinc Selenide Standard Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN1605 16 mm Dia. Zinc Selenide Standard Round Window; t=0.5mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN1502 15 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN1312 13 mm Dia. Zinc Sulphide Multispectral (clear) Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS | Circular |
| WZN1301 13 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN1311 13 mm Dia. Zinc Sulphide Multispectral (clear) Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS | Circular |
| WZN1310 13 mm Dia. Zinc Selenide Standard Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN1302 12.7 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN1300 12 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |