The Register,air, cataloged under National Stock Number 4520-00-442-3822, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-442-3822 |
| Item Name | Register,air |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Bar Adjustment Method | KEY |
| Bar Adjustability | ADJUSTABLE |
| Shape | SQUARE |
| Frame Type | FLAT |
| Grille Bar Position | HORIZONTAL AND VERTICAL |
| Bar Spacing in Inches | 0.500 |
| Frame Removability | NONREMOVABLE |
| Material | STEEL |
| Grille Quantity | 1 |
| Reference Number Differentiating Characteristics | AS MODIFIED BY DIM. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| S126-222DDHEMH | 3/1 Design control — primary reference Dynamics Corp of America Anemostat-West Div |
NSN 4520-00-442-3822 is a Register,air, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-00-442-3822: Bar Adjustment Method: KEY; Bar Adjustability: ADJUSTABLE; Shape: SQUARE; Overall Length: 12.000 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.