The Draft Control,flue,automatic, cataloged under National Stock Number 4520-01-512-7303, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-512-7303 |
| Item Name | Draft Control,flue,automatic |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Material | STEEL AND STEEL CORROSION RESISTING |
| 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 |
|---|---|
| MVC-2341 SIZE 40W X 20H | 3/9 Design control — primary reference Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating |
| 16815003-1 REV-PARTS LIST | 5/9 Secondary reference Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating |
| 1685003-1 REV-PARTS LIST | 5/9 Secondary reference Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating |
| 16815003 REV | 5/9 Secondary reference Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating |
NSN 4520-01-512-7303 is a Draft Control,flue,automatic, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-01-512-7303: Overall Height: 20.000 INCHES NOMINAL IN; Overall Width: 40.000 INCHES NOMINAL IN; Special Features: FRAME IS 3/16 IN. THICK CARBON STEEL; BLADES ARE 14 GA STAINLESS STEEL; AXLES ARE 1/2 IN. DIAM. 303 STAINLESS STEEL; BEARING SLEEVE IS OIL IMPREGNATED BRONZE; FINISH IS HOT DIPPED GALVANIZED ON CARBON STEEL; MAX. DIFF PRESSURE IS 12 IN. WG; MAX VELOCITY IS 3000 FPM IN; Part Name Assigned by Controlling Agency: STANDARD DUTY AIR CONTROL DAMPER (MARINE). 1 specification is 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.