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.
Narrow By
138 Products
138 Products
$37.80 to $61.11
$37.80 to $68.40
$40.05
$37.93 to $62.34
$41.76
$38.60 to $63.65
$41.00 to $72.00
$40.02 to $65.91
$43.95
$43.31 to $75.62
$41.66 to $68.71
$41.90 to $78.93
$42.78
$42.81 to $70.61
$41.90 to $80.55
$46.91 to $202.41
$41.59 to $72.57
$42.28
$42.64 to $82.77
$42.98 to $75.08
$49.98 to $84.93
$50.74 to $77.63
$47.88
$65.95