| OPSQ-40C06-20-2 40 mm Dia. UVFS Round Optical Parallel Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-60C10-1-5 60 mm Dia. UVFS Round Optical Parallel Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-130C18-P 130 mm Dia. UVFS Round Optical Parallel Flat Window; t=18 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-20C2.3-1-10 20 mm Dia. UVFS Round Optical Parallel Flat Window; t=2.3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-80C12-10-5 80 mm Dia. UVFS Round Optical Parallel Flat Window; t=12 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-25C01-P 25 mm Dia. UVFS Round Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPCFU-20C01-P 20 mm Dia. CaF2 Round Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | CaF2 | Circular |
| WBMA-25C02-10 25 mm Dia. N-BK7 Round AR coated Flat Window; t=2 mm 633-1064nm | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| WBMA-20C02-10 20 mm Dia. N-BK7 Round AR coated Flat Window; t=2 mm 750-1550nm | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| WBMA-20C03-10 20 mm Dia. N-BK7 Round AR coated Flat Window; t=3 mm 750-1550nm | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| WBMA-30C03-10-550 30 mm Dia. N-BK7 Round AR coated Flat Window; t=3 mm 400-700nm | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| WBMA-15C03-10 15 mm Dia. N-BK7 Round AR coated Flat Window; t=3 mm 750-1550nm | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| WBMA-25C02-10 25 mm Dia. N-BK7 Round AR coated Flat Window; t=2 mm 750-1550nm | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| WSQNAHP-25.4C03-10-1064 25.4 mm Dia. UVFS Round High Power AR coated Flat Window; t=3 mm 1064nm | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| WSQNAHP-50C05-10-1064 50 mm Dia. UVFS Round High Power AR coated Flat Window; t=5 mm 1064nm | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| 47-516 10 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 83-466 10 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 83-464 5 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 83-465 9 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 45-657 10 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm VIS-NIR 400-1000nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| OPSQ-20C03-20-2 20 mm Dia. UVFS Round Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-20C03-1-5 20 mm Dia. UVFS Round Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-50C05-10-5 50 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-15C02-1-5 15 mm Dia. UVFS Round Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-30C05-P 30 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-25C02-P 25 mm Dia. UVFS Round Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-40C02-1-5 40 mm Dia. UVFS Round Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-25C03-4-5 25 mm Dia. UVFS Round Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-40C06-4-5 40 mm Dia. UVFS Round Optical Parallel Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-80C12-20-2 80 mm Dia. UVFS Round Optical Parallel Flat Window; t=12 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-150C20-P 150 mm Dia. UVFS Round Optical Parallel Flat Window; t=20 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-10C05-P 10 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-50C08-1-5 50 mm Dia. UVFS Round Optical Parallel Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-40C01-1-5 40 mm Dia. UVFS Round Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-10C02-10-5 10 mm Dia. UVFS Round Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-25.4C05-10-5 25.4 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-30C02-10-5 30 mm Dia. UVFS Round Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-10C05-4-5 10 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-50C2.3-0.25-10 50 mm Dia. UVFS Round Optical Parallel Flat Window; t=2.3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-30C03-4-5 30 mm Dia. UVFS Round Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-20C05-1-5 20 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-50C08-10-5 50 mm Dia. UVFS Round Optical Parallel Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-30C05-1-5 30 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPCFU-30C02-P 30 mm Dia. CaF2 Round Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | CaF2 | Circular |
| OPCF-30C02-P 30 mm Dia. CaF2 Round Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | CaF2 | Circular |
| OPGE-30C03-P 30 mm Dia. Germanium Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | Germanium | Circular |
| OPSH-25C02-P 25 mm Dia. Sapphire Round Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | Sapphire ow | Circular |
| OPSI-40C04-2-3 40 mm Dia. Silicon Round Flat Window; t=4 mm Uncoated | Optics | Window | Flat Window | OptoSigma | Silicon | Circular |
| OPZS-40C04-10-3 40 mm Dia. ZnSe Round Flat Window; t=4 mm Uncoated | Optics | Window | Flat Window | OptoSigma | ZnSe | Circular |
| WBMA-25.4C03-10 25 mm Dia. N-BK7 Round AR coated Flat Window; t=3 mm 750-1550nm | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| WBMA-25.4C03-10 25 mm Dia. N-BK7 Round AR coated Flat Window; t=3 mm 633-1064nm | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| WSQNAHP-30C03-10-1064 30 mm Dia. UVFS Round High Power AR coated Flat Window; t=3 mm 1064nm | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| 48-448 5 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm VIS-NIR 400-1000nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 45-074 10 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 83-468 12.5 mm Dia. N-BK7 Precision Protective Flat Window; t=3 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 36-991 25 mm Dia. N-BK7 Precision Protective Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 36-998 25 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm MgF2 400-700nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 83-476 40 mm Dia. N-BK7 Precision Protective Flat Window; t=4 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 37-009 50 mm Dia. N-BK7 Precision Protective Flat Window; t=1 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 37-012 50 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 37-017 50 mm Dia. N-BK7 Precision Protective Flat Window; t=3 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 45-583 50 mm Dia. N-BK7 Precision Protective Flat Window; t=4 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 47-523 50 mm Dia. N-BK7 Precision Protective Flat Window; t=4 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 34-430 50 mm Dia. N-BK7 Precision Protective Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 11-856 100 mm Dia. N-BK7 Precision Protective Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 11-857 125 mm Dia. N-BK7 Precision Protective Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 45-577 20 mm Dia. N-BK7 Precision Protective Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 36-994 25 mm Dia. N-BK7 Precision Protective Flat Window; t=1 mm MgF2 400-700nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 49-633 25.0 x 25.0 mm N-BK7 Precision Protective Flat Window; t=4 mm VIS-NIR 400-1000nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Rectangular |
| 37-005 25 mm Dia. N-BK7 Precision Protective Flat Window; t=3 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 45-309 12.5 mm Dia. UVFS Round Protective Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 45-579 30 mm Dia. N-BK7 Precision Protective Flat Window; t=4 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 83-474 30 mm Dia. N-BK7 Precision Protective Flat Window; t=4 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 34-429 50 mm Dia. N-BK7 Precision Protective Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 45-311 25 mm Dia. UVFS Round Protective Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 45-812 25 mm Dia. UVFS Round Protective Flat Window; t=2 mm UV-AR 250-425nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 83-477 50 mm Dia. N-BK7 Precision Protective Flat Window; t=4 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 36-977 25 mm Dia. UVFS Round Protective Flat Window; t=2 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 37-019 50 mm Dia. N-BK7 Precision Protective Flat Window; t=6 mm MgF2 400-700nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 39-299 25 mm Dia. UVFS Round Protective Flat Window; t=2 mm NIR II 750-1550nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 84-477 30 mm Dia. UVFS Round Protective Flat Window; t=3 mm UV-VIS 250-700nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 11-925 30 mm Dia. UVFS Round Protective Flat Window; t=3 mm MgF2 400-700nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 62-608 75 mm Dia. N-BK7 Precision Protective Flat Window; t=4 mm MgF2 400-700nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 11-860 125 mm Dia. N-BK7 Precision Protective Flat Window; t=8 mm MgF2 400-700nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 49-646 40 mm Dia. UVFS Round Protective Flat Window; t=4 mm VIS-NIR 400-1000nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 36-984 40 mm Dia. UVFS Round Protective Flat Window; t=4 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 39-292 100 mm Dia. UVFS Round Protective Flat Window; t=8 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 11-858 150 mm Dia. N-BK7 Precision Protective Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 11-930 100 mm Dia. UVFS Round Protective Flat Window; t=8 mm MgF2 400-700nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Circular |
| 83-469 12.5 x 12.5 mm N-BK7 Precision Protective Flat Window; t=3 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Rectangular |
| 36-971 12.5 x 12.5 mm UVFS Protective Flat Window; t=2 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Rectangular |
| 47-231 50.0 x 50.0 mm UVFS Protective Flat Window; t=4 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | UVFS | Rectangular |
| 49-629 25.0 x 25.0 mm N-BK7 Precision Protective Flat Window; t=4 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Rectangular |
| 49-625 25.0 x 25.0 mm N-BK7 Precision Protective Flat Window; t=4 mm MgF2 400-700nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Rectangular |
| 84-480 50.0 x 50.0 mm UVFS Protective Flat Window; t=4 mm UV-VIS 250-700nm | Optics | Window | Flat Window | Edmund Optics | UVFS | Rectangular |
| 49-470 35.0 x 35.0 mm N-BK7 Precision Protective Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Rectangular |
| 49-630 35.0 x 35.0 mm N-BK7 Precision Protective Flat Window; t=3 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Rectangular |
| 49-626 35.0 x 35.0 mm N-BK7 Precision Protective Flat Window; t=3 mm MgF2 400-700nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Rectangular |
| 83-475 35.0 x 35.0 mm N-BK7 Precision Protective Flat Window; t=3 mm NIR I 600-1050nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Rectangular |
| 37-071 75.0 x 75.0 mm N-BK7 Precision Protective Flat Window; t=4 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Rectangular |