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
142 Products
142 Products
$14.31 to $24.63
$14.84 to $26.04
$14.84 to $23.75
$15.10 to $24.25
$15.52 to $25.00
$142.18 to $255.90
$16.63 to $25.94
$16.62 to $26.69
$15.43 to $27.26
$17.31 to $27.87
$17.69 to $28.48
$18.03 to $29.12
$18.42 to $29.69
$18.79 to $30.30
$19.93 to $30.90
$19.49 to $31.50
$19.76 to $32.01
$20.10 to $32.45
$20.34 to $32.96
$20.69 to $33.45
$20.94 to $33.94
$21.15 to $34.30
$21.98 to $34.54
$21.51 to $34.91