MetroVac Air Force Master Blaster MB-3CD

Metropolitan Vacuum Cleaner Co., Inc. — the manufacturer of MetroVac products — holds UL file E31177, which covers vacuum cleaning machines and blower cleaners. A UL Product iQ search on May 16, 2026 confirmed the file at the manufacturer-org level. The per-SKU line-item mapping inside E31177 was not separately exposed in the public search snippet, so the safety_certification score is 8 (file-level confirmation) rather than 9. The brand has historically relied on UL rather than Intertek/ETL; no separate ETL listing was found.

Five attachments, confirmed via the manufacturer product page on 2026-05-16: a Crevice Tool that serves as the narrow concentrator for badge letters, door jambs, and tight rubber seals; an Air Flare cone for wider coverage; an Inflator Adapter for valve work; a Hose/Air Stream Adapter; and a 1½-inch Neoprene Blower Nozzle for general blow-off use.

A motor-with-hose setup. The unit consists of a 16-lb steel canister on wheels that houses the twin 4.0 peak HP motors, a flexible hose, and the hand-held nozzle. You position the canister on the floor or driveway and direct the hose where you need air. This trades hand-fatigue (the canister weight is on the floor, not in your hand) for needing a place to set the canister down — relevant if you are working in a tight garage or parking structure.

MetroVac publishes a 74 dB rating on the MB-3CD product page (distance not disclosed). Community reviews on AutogeekOnline describe the unit as loud relative to a hair dryer but tolerable outdoors. No independent ≥85 dB measurement was found, and no ≥2 community sources flag noise as a category-norm-exceeding concern. Hearing protection is reasonable for extended indoor sessions but not required by category data.

No. A CPSC recall database check on May 16, 2026 returned no active or historical recall for MetroVac, the Master Blaster product line, or model MB-3CD.