| WZN1201 12 mm Dia. Zinc Selenide Standard Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| WZN1011 10 mm Dia. Zinc Sulphide Multispectral (clear) Round Window; t=1mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnS | Circular |
| WZN0902 9 mm Dia. Zinc Selenide Standard Round Window; t=2mm Uncoated | Optics | Window | Flat Window | Knight Optical | ZnSe | Circular |
| 68-511 12.5 mm Dia. Zinc Selenide Protective Flat Window; t=1mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-516 12.5 mm Dia. Zinc Selenide Protective Flat Window; t=1mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-499 12.5 mm Dia. Zinc Selenide Protective Flat Window; t=2mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-405 12.7 mm Dia. Zinc Selenide Protective Flat Window; t=1mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-419 12.7 mm Dia. Zinc Selenide Protective Flat Window; t=1mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 63-210 20 mm Dia. Zinc Selenide Protective Flat Window; t=2mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-512 25 mm Dia. Zinc Selenide Protective Flat Window; t=1mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-517 25 mm Dia. Zinc Selenide Protective Flat Window; t=1mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-518 25 mm Dia. Zinc Selenide Protective Flat Window; t=2mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 47-938 25 mm Dia. Zinc Selenide Protective Flat Window; t=3mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-501 25 mm Dia. Zinc Selenide Protective Flat Window; t=3mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-407 25 mm Dia. Zinc Selenide Protective Flat Window; t=5mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-421 25 mm Dia. Zinc Selenide Protective Flat Window; t=5mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-409 25.4 mm Dia. Zinc Selenide Protective Flat Window; t=2mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-434 25.4 mm Dia. Zinc Selenide Protective Flat Window; t=2mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-410 25.4 mm Dia. Zinc Selenide Protective Flat Window; t=3mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-437 25.4 mm Dia. Zinc Selenide Protective Flat Window; t=5mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 63-211 30 mm Dia. Zinc Selenide Protective Flat Window; t=3mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-502 30 mm Dia. Zinc Selenide Protective Flat Window; t=3mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 63-212 40 mm Dia. Zinc Selenide Protective Flat Window; t=4mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-503 40 mm Dia. Zinc Selenide Protective Flat Window; t=4mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-514 50 mm Dia. Zinc Selenide Protective Flat Window; t=1mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-520 50 mm Dia. Zinc Selenide Protective Flat Window; t=2mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 68-504 50 mm Dia. Zinc Selenide Protective Flat Window; t=3mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-438 50 mm Dia. Zinc Selenide Protective Flat Window; t=5mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-413 50.8 mm Dia. Zinc Selenide Protective Flat Window; t=1mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-414 50.8 mm Dia. Zinc Selenide Protective Flat Window; t=2mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-464 50.8 mm Dia. Zinc Selenide Protective Flat Window; t=2mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-415 50.8 mm Dia. Zinc Selenide Protective Flat Window; t=3mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-416 50.8 mm Dia. Zinc Selenide Protective Flat Window; t=5mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 39-467 50.8 mm Dia. Zinc Selenide Protective Flat Window; t=5mm BBAR 8-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 48-855 75 mm Dia. Zinc Selenide Protective Flat Window; t=6mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | ZnSe | Circular |
| 34-522 5 mm Dia. Borofloat33 Protective Flat Window; t=1.1mm Hydrophobic 425-675nm | Optics | Window | Flat Window | Edmund Optics | Borofloat33 | 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 |
| 68-524 25 mm Dia. Silicon Protective Flat Window; t=1mm BBAR 3-5µm | Optics | Window | Flat Window | Edmund Optics | Silicon | Circular |
| 13-799 75 mm Dia. Diamond-Like Carbon (DLC) Coated; Germanium Flat Window; t=5mm BBAR 8-12µm/DLC | Optics | Window | Flat Window | Edmund Optics | Germanium | Circular |
| 64-147 50 mm Dia. Zinc Sulfide Protective Flat Window; t=3mm BBAR 3-12µm | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| WQK5002-AI2 50 mm Dia. N-BK7 Precision Round Window; t=6mm AR 1050-1700nm | Optics | Window | Flat Window | Knight Optical | N-BK7 | Circular |
| WGP1003-AV2 100 x 100 mm Schott Borofloat 33 Rectangular Window; t=2mm AR 400-1000nm | Optics | Window | Flat Window | Knight Optical | Borofloat33 | Rectangular |
| WHF6500-AU1 65 mm Dia. UVFS Round Window; t=6mm AR 248-400nm | Optics | Window | Flat Window | Knight Optical | UVFS | Circular |
| WGE3033 30 mm Dia. Germanium Round Window; t=3mm AR-DLC 7-14µm | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| WGE2542 25 mm Dia. Germanium Round Window; t=1mm AR 3-12µm | Optics | Window | Flat Window | Knight Optical | Germanium | Circular |
| CaF2-W-32x3-Drilled 32 mm Dia. CaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-38.1x3 38.1 mm Dia. CaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-50.8x0.5 50.8 mm Dia. CaF2 Flat Window; t=0.5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-50.8x1 50.8 mm Dia. CaF2 Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-50.8x3 50.8 mm Dia. CaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| CaF2-W-101.6x8 101.6 mm Dia. CaF2 Flat Window; t=8mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | CaF2 | Circular |
| BaF2-W-13x2 13 mm Dia. BaF2 Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-25.4-3 25.4 mm Dia. BaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-25.4-6 25.4 mm Dia. BaF2 Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-31.75-1 31.75 mm Dia. BaF2 Flat Window; t=1mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-50.8-5 50.8 mm Dia. BaF2 Flat Window; t=5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-50.8-6 50.8 mm Dia. BaF2 Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-63.5-3 63.5 mm Dia. BaF2 Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| BF-W-76.2-6 76.2 mm Dia. BaF2 Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | BAF2 | Circular |
| FS-w-38.1-3 38.1 mm Dia. UVFS Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| GE-W-6.35-0.5 6.35 mm Dia. Germanium Flat Window; t=0.5mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-140-10 140 mm Dia. Germanium Flat Window; t=10mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| GE-W-152.4-10 152.4 mm Dia. Germanium Flat Window; t=10mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | Germanium | Circular |
| KBr-W-13x2 13 mm Dia. KBr Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KBr-W-41x3 41 mm Dia. KBr Flat Window; t=3mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-25.4-2 25.4 mm Dia. KCl Flat Window; t=2mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| KC-W-25.4-6 25.4 mm Dia. KCl Flat Window; t=6mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |
| NC-W-25.4-4 25.4 mm Dia. NaCl Flat Window; t=4mm Uncoated | Optics | Window | Flat Window | Alkor Technologies | UVFS | Circular |