The 3M™ DBI-SALA® Rollgliss™ R550 Rescue and Descent Device Kit (3325050) is a high-performance rescue solution designed for controlled descent and evacuation at height. Equipped with a 50 ft (15.2 m) kernmantle rope, this fully automatic device ensures smooth, reliable vertical descent. This configuration is supplied without a rescue wheel, making it ideal for standard evacuation scenarios where lifting capability is not required.

Key Features

Controlled descent system: Designed for evacuation and rescue operations.
Automatic operation: Smooth, reliable vertical descent.
Without rescue wheel: Optimized for descent-only applications.
Ladder mounting bracket: Fast detent-style installation with adjustable spacing.
Durable construction: Aluminum housing with powder-coated steel bracket.
Bi-directional configuration: Hardware at both ends for flexible use.
Humidity protection option: Sealed case (optional) with external indicator for inspection.

Intended Use

Designed for controlled descent and evacuation from height using ladder-mounted systems in industrial environments.

Construction sites
Utilities and infrastructure maintenance
Transportation sector operations
General industrial environments
Emergency evacuation systems

Product Specifications

Model: 3325050
Configuration: Without rescue wheel
Lifeline Length: 50 ft (15.2 m)
Lifeline Material: Kernmantle rope (polyester cover with nylon core)
Rope Diameter: 3/8 in (9.5 mm)
Housing Material: Aluminum
Weight: 10.9 lb
Bracket Weight: 2.5 lb (1.1 kg)
Bracket Capacity: 310 lb (140.6 kg)
Maximum Capacity: Single user: 310 lb (141 kg) / Two users: 620 lb (282 kg)
Maximum Descent: 1,640 ft (500 m) single user / 575 ft (175 m) two users
Descent Type: Vertical
User Controlled Descent: Yes
User Controlled Ascent: No
Carabiner/Hook Material: Zinc plated steel
Kit contains: 4 ft. (1.2m) anchor sling, two carabiners, and a carrying bag

Certifications and Standards

ANSI/ASSP Z359.9-2021 – Rescue and descent devices
CSA Z259.2.3-12 – Dispositifs de descente contrôlée