D850-132 Vertical Lift Garage Door Cable Drums – 11' Max Door Height, 3/16" Cable – Pair

The D850-132 Vertical Lift Cable Drum Set is designed for commercial and industrial overhead doors using a full vertical-lift track configuration.

Unlike standard-lift or high-lift drums, vertical-lift drums are engineered for doors that travel vertically above the opening rather than transitioning onto horizontal track. The D850-132 supports doors up to 11 feet high and provides a capacity of up to 425 lb per drum.

This listing includes a matched left-hand and right-hand drum pair for proper installation on both sides of the door.

Product Features

• Designed for full vertical-lift garage door systems

• Maximum door height: 11 ft

• Capacity: 425 lb per drum

• Maximum cable diameter: 3/16"

• Heavy-duty commercial door application

• Matched left-hand and right-hand drums

• Designed for use with torsion spring counterbalance systems

• Precision cable grooves help maintain proper cable tracking

• Suitable for commercial and industrial sectional overhead doors

• Sold as a pair

Specifications

• Drum Model: D850-132

• Lift Type: Vertical Lift

• Maximum Door Height: 11 ft / 132"

• Capacity: 425 lb per drum

• Combined Drum Capacity: 850 lb

• Maximum Cable Size: 3/16"

• Quantity: 1 Pair – Left & Right

• Application: Commercial / Industrial Sectional Doors

Cable Length Formula

For proper vertical-lift cable sizing, use:

Floor to Shaft Center + 143" − Door Height

Example:

If the torsion shaft center is 144" above the floor and the door is 120" high:

144" + 143" − 120" = 167" cable length

Always verify the complete door geometry and cable requirements before ordering or fabricating cables.

Left & Right Drum Identification

Vertical-lift drums are installed as a matched pair.

• Left-Hand Drum: Red

• Right-Hand Drum: Black

Drum color identification is opposite the corresponding torsion spring cone color convention.

Designed for Vertical-Lift Doors

A full vertical-lift door travels vertically above the opening rather than turning onto horizontal tracks.

This configuration is commonly found in:

• Warehouses

• Automotive service facilities

• Fire stations

• Industrial buildings

• Loading facilities

• Manufacturing plants

• Commercial buildings with high ceilings

• Facilities requiring maximum overhead clearance

The D850-132 is specifically designed to manage the cable travel required by this type of door system.

Compatibility & Matching

Before ordering, verify:

• Lift type: Full vertical lift

• Maximum door height: 11 ft

• Door weight

• Maximum cable diameter

• Torsion shaft configuration

• Existing drum model

• Cable length

• Track configuration

Do not substitute standard-lift or high-lift drums for a vertical-lift application.

Cable drums must be correctly matched to the door weight, height, track configuration, cable size, and counterbalance system.

Cross-Reference

The D850-132 configuration may cross-reference with equivalent vertical-lift drums commonly identified as:

• APCO 850-11

• DNS 143-11

• OMI 11 VL

• M216-3350

Always compare dimensions and application requirements before substituting another manufacturer's drum.

Package Contents

• 1 Left-Hand Vertical Lift Drum

• 1 Right-Hand Vertical Lift Drum

Sold as one matched pair.

Lift cables, torsion springs, shaft, bearings, track, bottom fixtures, and other counterbalance components are sold separately.

Important Safety Information

Garage door cable drums, torsion springs, and lift cables are part of a high-tension counterbalance system.

Incorrect drum selection or installation can cause cable problems, improper door balance, uncontrolled door movement, equipment damage, or serious injury.

Installation and replacement should be performed by a trained garage door technician. Always properly secure the door and release spring tension using appropriate procedures before servicing cable drums or counterbalance components.