The Diffuser,air,ceiling, cataloged under National Stock Number 4520-00-508-0971, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Dynamics Corp of America Anemostat-West Div. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-00-508-0971 |
| Primary Part Number | 12X12RMDS4S4T |
| Item Name | Diffuser,air,ceiling |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Dynamics Corp of America Anemostat-West Div |
| Status | ACTIVE |
| General Characteristics Item Description | SURFACE MOUNTED FABRICATED OF MATERIALS STANDARD WITH MANUFACTURER,FINISH TO BE BAKED WHITE ENAMEL,DIFFUSER CONSISTS OF FOUR EACH 6 IN SQUARE CORE MODULES FOR A FOUR WAY THROW PATTERN,CORE MODULES SHALL CONTAIN INTEGRAL INDIVIDUAL DAMPERS TO INDEPENDENTLY ADJUST THE EFFECTIVE AREA AND VOLUME FROM 0 TO 100 PER CENT IN ALL DIRECTIONS OF FLOW IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12X12RMDS4S4T PRIMARY | Dynamics Corp of America Anemostat-West Div (USA) |
NSN 4520-00-508-0971 is a Diffuser,air,ceiling, manufactured by Dynamics Corp of America Anemostat-West Div, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-00-508-0971 has 1 manufacturer part number on file: 12X12RMDS4S4T (Dynamics Corp of America Anemostat-West Div).
Key specifications for 12X12RMDS4S4T: General Characteristics Item Description: SURFACE MOUNTED FABRICATED OF MATERIALS STANDARD WITH MANUFACTURER,FINISH TO BE BAKED WHITE ENAMEL,DIFFUSER CONSISTS OF FOUR EACH 6 IN SQUARE CORE MODULES FOR A FOUR WAY THROW PATTERN,CORE MODULES SHALL CONTAIN INTEGRAL INDIVIDUAL DAMPERS TO INDEPENDENTLY ADJUST THE EFFECTIVE AREA AND VOLUME FROM 0 TO 100 PER CENT IN ALL DIRECTIONS OF FLOW IN. 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.