Rope Grab with 4 ft Web Lanyard Assembly
The 8174MLS4 arrives ready to rig: the stainless trailing rope grab with a 4 ft web lanyard and locking snap hook already attached, so the vertical system goes together without sourcing and matching a separate connector.
The factory assembly removes the component-matching guesswork from vertical lifeline setup.

Who Needs This Product
A rope grab is only half a connection; the lanyard between grab and harness is the other half, and mismatching it changes the fall math. The MLS4 assembly ships the pairing the manufacturer intended, cutting both setup time and the chance of an improvised link in the chain.
Features
Factory-Matched Assembly
The 4 ft web lanyard and grab arrive as one engineered unit.
Trailing Action
The grab follows the worker up and down the line without hand tending.
Instant Cam Lock
Fall loading cams the grab onto the rope in inches.
Locking Snap Hook
The harness end connects with a double-action locking hook.
Two Rope Sizes
Fits 5/8 and 3/4 inch lifelines.
Stainless Steel Grab
Corrosion-proof hardware for outdoor service.
Technical Specifications
| SKU | 8174MLS4/4FTYL |
|---|---|
| Product | Rope Grab with Web Lanyard Assembly |
| Rope sizes | 5/8 and 3/4 in |
| Lanyard | 4 ft web with locking snap hook |
| Grab material | Stainless steel |
| Standards | Meets OSHA vertical lifeline requirements |
| Warranty | Miller Limited Lifetime Warranty against defects in workmanship and materials |
The anchor is only as good as the structure. Connect only to members that meet OSHA anchorage strength, position to minimize free fall and swing, and inspect before every use.
Compliance Standards
OSHA 1926.502 Anchorage
Anchorages for fall arrest must support 5,000 lb per worker attached, or maintain a safety factor of two under a qualified person.
ANSI Z359 Practice
Anchorage connectors follow ANSI Z359 component practice with 5,000 lb rated hardware.
ANSI Z359.2
Kept in service through pre-use checks and documented competent person inspections at least annually.
Typical Applications
Setup Overview
- Inspect the anchor and hardware before use.
- Select structure that meets OSHA anchorage strength for fall arrest.
- Install the anchor per the instructions for the structure type.
- Connect the lanyard or SRL and verify gates lock.
- Verify fall clearance and swing fall exposure before working.
Full installation instructions ship with the product.
Inspection and Retirement
Inspect before each use and have a competent person inspect at least annually per ANSI Z359.2.
- Webbing or body: cuts, frays, corrosion, cracks, distortion, or damage.
- D-rings and hooks: no cracks, corrosion, distortion; gates lock where fitted.
- Stitching and fasteners: intact and tight.
- Labels: present and legible.
Retirement triggers: any fall arrest loading, any defect found during inspection, or failure to verify fitness for service.
Frequently Asked Questions
Miller 8174MLS4/4FTYL Submittals and Documentation
8174MLS4 Specification Sheet (PDF)Technical data, ratings, and SKU-level UPC information. Miller Fall Protection Catalog (PDF)The full Miller line: body wear, connecting devices, anchors, and rescue. 8174MLS4 Anchor Inspection Form (PDF)Printable pass/fail checklist for documented anchor inspections.Compatible and Related Products
- Miller 300L Vertical Rope Lifeline, 50 ft. The lifeline this grab rides on.
- Miller 8174 Manual Rope Grab. The bare grab for systems with their own connector.
- Miller T4500 Titan II Non-Stretch Harness. The harness on the climbing end.
Anchoring Your Fall Protection System?
Structure type, strength, and position decide the right anchor. Confirm your conditions with us and we will make sure the right equipment ships together, based on the delivery location.
Call 863-703-4522 to talk to a fall protection specialist.
Miller Limited Lifetime Warranty
Miller Fall Protection products are covered by the Miller Limited Lifetime Warranty. In the manufacturer's words: "We sincerely believe that our fall protection equipment is the best in the world. Our products endure rigorous tests to ensure that the fall protection equipment you trust is manufactured to the highest standards. Miller fall protection products are tested to withstand normal wear and tear, but are not indestructible and can be damaged by misuse."
In the unlikely event that you should discover defects in either workmanship or materials, under the Limited Lifetime Warranty, Miller will repair or replace the product at the manufacturer's expense. If a replacement is necessary and your product is no longer available, a comparable product will be substituted. The Limited Lifetime Warranty does not apply to normal wear and tear or abusive treatment of the product.
Miller is a brand of Protective Industrial Products, Inc. (PIP). Should a product issue surface, contact Fall Protection Distributors, LLC and we will coordinate the warranty claim with the manufacturer.
