| CAW4025-3 25.4 mm Dia. CaF2 Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | CaF2 | Circular |
| CAW4020-5 20 mm Dia. CaF2 Round Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | Union Optic | CaF2 | Circular |
| CAW4012-3 12.7 mm Dia. CaF2 Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | CaF2 | Circular |
| CAW4012-1 12.7 mm Dia. CaF2 Round Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | Union Optic | CaF2 | Circular |
| 4002010220 50.8 mm Dia. UVFS Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 4002010217 20 mm Dia. UVFS Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 4002010213 50.8 mm Dia. UVFS Round Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 4002010212 20 mm Dia. N-BK7 Round Flat Window; t=6.35 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010140 15 mm Dia. N-BK7 Round Flat Window; t=1.04 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010101 16 mm Dia. N-BK7 Round Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010100 38.1 mm Dia. N-BK7 Round Flat Window; t=6.35 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010073 25.4 mm Dia. N-BK7 Round Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010034 20 mm Dia. N-BK7 Round Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010028 25.4 mm Dia. N-BK7 Round Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010026 12.7 mm Dia. N-BK7 Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010020 25 mm Dia. N-BK7 Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010007 20 mm Dia. N-BK7 Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 4002010002 50.8 mm Dia. N-BK7 Round Flat Window; t=6.35 mm Uncoated | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 3005011334 20 mm Dia. UVFS Round Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 3005010688 25 mm Dia. UVFS Round Flat Window; t=4 mm Uncoated | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 3005010444 87.5 mm Dia. UVFS Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 3005010432 25.4 mm Dia. UVFS Round Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 3005010033 43 mm Dia. UVFS Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 4002010207 155 mm Dia. B270 Glass Round Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | Union Optic | B270 | Circular |
| 3005011658 12.7 mm Dia. HPFS 7980 Round Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | Union Optic | HPFS7980 | Circular |
| 3005011080 25.4 mm Dia. HPFS 7980 Round Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | Union Optic | HPFS7980 | Circular |
| ARW1050-5 50.8 mm Dia. UVFS Round AR coated Flat Window; t=6.35mm 515-532nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| ARW1050-3 50.8 mm Dia. UVFS Round AR coated Flat Window; t=6.35mm 351-355nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| ARW1025-5 25.4 mm Dia. UVFS Round AR coated Flat Window; t=6.35mm 515-532nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| ARW1025-3 25.4 mm Dia. UVFS Round AR coated Flat Window; t=6.35mm 351-355nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| ARW1025-2 25.4 mm Dia. UVFS Round AR coated Flat Window; t=6.35mm 260-270nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| ARW1025-1 25.4 mm Dia. UVFS Round AR coated Flat Window; t=6.35mm 1028-1064nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| ARW1012-5 12.7 mm Dia. UVFS Round AR coated Flat Window; t=3mm 515-532nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| ARW1012-1 12.7 mm Dia. UVFS Round AR coated Flat Window; t=3mm 1028-1064nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| ARW0050-4B 50.8 mm Dia. N-BK7 Round AR coated Flat Window; t=6.35mm 400-700nm | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| ARW0025-7 25.4 mm Dia. N-BK7 Round AR coated Flat Window; t=6.35mm 780-810nm | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| ARW0025-6B 25.4 mm Dia. N-BK7 Round AR coated Flat Window; t=6.35mm 650-1100nm | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| ARW0025-6 25.4 mm Dia. N-BK7 Round AR coated Flat Window; t=6.35mm 630-650nm | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| ARW0025-1 25.4 mm Dia. N-BK7 Round AR coated Flat Window; t=6.35mm 1028-1064nm | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| ARW0012-7 12.7 mm Dia. N-BK7 Round AR coated Flat Window; t=3mm 780-810nm | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| ARW0012-6B 12.7 mm Dia. N-BK7 Round AR coated Flat Window; t=3mm 650-1100nm | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| ARW0012-51 12.7 mm Dia. N-BK7 Round AR coated Flat Window; t=3mm 515-532/1028-1070nm | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 3005012056 20 mm Dia. N-BK7 Round AR coated Flat Window; t=2mm 515-532nm | Optics | Window | Flat Window | Union Optic | N-BK7 | Circular |
| 3005011591 20 mm Dia. UVFS Round AR coated Flat Window; t=3mm 351-355nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 3005011185 30 mm Dia. UVFS Round AR coated Flat Window; t=3mm 515-532nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| LPW1138-3 38.1 mm Dia. UVFS Round AR coated Laser Protection Flat Window; t=3mm 1028-1080nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| LPW1130-6 30 mm Dia. UVFS Round AR coated Laser Protection Flat Window; t=6mm 1028-1080nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| LPW1130-3 30 mm Dia. UVFS Round AR coated Laser Protection Flat Window; t=3mm 1028-1080nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| LPW1121-2 21.5 mm Dia. UVFS Round AR coated Laser Protection Flat Window; t=2mm 1028-1080nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| LPW1120-1 20 mm Dia. UVFS Round AR coated Laser Protection Flat Window; t=1mm 1028-1080nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| 3005010165 30 mm Dia. UVFS Round AR coated Laser Protection Flat Window; t=5mm 1064nm | Optics | Window | Flat Window | Union Optic | UVFS | Circular |
| WBMA-30C02-10-550 30 mm Dia. N-BK7 Round AR coated Flat Window; t=2 mm 400-700nm | Optics | Window | Flat Window | OptoSigma | N-BK7 | Circular |
| 49-124 9 mm Dia. N-BK7 Precision Protective Flat Window; t=2 mm VIS-NIR 400-1000nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| 47-517 12.5 mm Dia. N-BK7 Precision Protective Flat Window; t=3 mm VIS 0 425-675nm | Optics | Window | Flat Window | Edmund Optics | N-BK7 | Circular |
| OPSQ-100C10-1-5 100 mm Dia. UVFS Round Optical Parallel Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-10C02-20-2 10 mm Dia. UVFS Round Optical Parallel Flat Window; t=2 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-40C04-10-5 40 mm Dia. UVFS Round Optical Parallel Flat Window; t=4 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-15C05-P 15 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-25C05-1-5 25 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-10C03-20-2 10 mm Dia. UVFS Round Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-25.4C03-4-5 25.4 mm Dia. UVFS Round Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-30C01-P 30 mm Dia. UVFS Round Optical Parallel Flat Window; t=1 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-150C20-10-5 150 mm Dia. UVFS Round Optical Parallel Flat Window; t=20 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-20C03-10-5 20 mm Dia. UVFS Round Optical Parallel Flat Window; t=3 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-12.7C05-10-5 12.7 mm Dia. UVFS Round Optical Parallel Flat Window; t=5 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-100C10-10-5 100 mm Dia. UVFS Round Optical Parallel Flat Window; t=10 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| OPSQ-60C06-4-5 60 mm Dia. UVFS Round Optical Parallel Flat Window; t=6 mm Uncoated | Optics | Window | Flat Window | OptoSigma | UVFS | Circular |
| 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 |