B/5L V-Belt
B / 5L V-Belts — Commercial HVAC Air Handler & Rooftop Unit Belts
The B/5L V-belt is the single most common drive belt in commercial HVAC — rooftop units (RTUs), air handling units (AHUs), packaged systems, and condenser fan drives. 21/32" top width • 13/32" depth • 1–25 HP • Min. sheave 5.4" • B-section: IC = part number (OC = IC + 3") | 5L: OC = part number ÷ 10. Same cross-section — direct substitutes when lengths match.
Stock B45–B75 range to cover the majority of commercial RTU and AHU service calls. A failed blower belt takes down an entire zone — keep these on hand.
In stock and ready to ship. Largest selection of B and 5L sizes available for immediate shipment.
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