AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Air Register |
| Federal Supply Group (FSG) | Plumbing Heating and Sanitation Equipment |
| Federal Supply Class (FSC) | 4520 Space And Water Heating Equipment |
| National Item Identification Number (NIIN) | 01-238-1837 (012381837) |
| NCB Code | USA (01) |
| Manufacturer | Interpace Corp, Alter Harry Co |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABFY | Overall Depth | 2.750 INCHES NOMINAL |
| MATT | Material | STEEL |
| AJLB | Blade Quantity | 1 |
| ADAV | Overall Diameter | 17.938 INCHES NOMINAL |
| ALDF | Frame Type | FLAT |
| MRC | Decoded Requirement | Clear Text Reply |
| ASJS | Grille Quantity | 4 |
| ASMG | Deflector Blade Operating Method | ANY ACCEPTABLE |
| ASJR | Frame Removability | NONREMOVABLE |
| SHPE | Shape | ROUND |
| ASMH | Blade Vertical Surface Axis Position | HORIZONTAL |
| Relevant Components for NSN - 4520-01-238-1837, 4520012381837 | ||||
| 4510-00-105-9296 (4510001059296) | 4540-00-513-7605 (4540005137605) | 4520-01-549-0756 (4520015490756) | 4520-01-286-4599 (4520012864599) | |
| 4510-01-051-0328 (4510010510328) | 4530-00-129-0028 (4530001290028) | 4530-00-689-3172 (4530006893172) | 4510-00-801-5645 (4510008015645) | |
| 4510-00-132-6368 (4510001326368) | 4540-01-257-7867 (4540012577867) | 4540-01-141-8557 (4540011418557) | 4520-01-150-7187 (4520011507187) | |
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