Titan II Positioning Harness with Side D-Rings
The Miller T4507 Titan II adds work positioning to the Titan II formula crews already trust: the same lightweight, non-stretch hi-viz polyester webbing and five points of adjustment, plus a side D-ring at each hip for connecting a positioning lanyard. Workers on rebar, poles, and steel can lean into the work with both hands free.
Certified to ANSI Z359.11 and compliant with OSHA 1926.502 and 1910.140, the T4507 supports a 420 lb maximum working load including clothing and tools. The sliding back D-ring handles fall arrest, the side D-rings handle positioning, and the Universal (L/XL) size fits the majority of workers.
Miller Harness Sizing Chart
Height (ft) by Weight (lb)
| 110 | 130 | 150 | 170 | 190 | 210 | 230 | 250 | 270 | 290 | 310 | 330 | 350 | 370 | 390 | 400 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6′6″ | ||||||||||||||||
| 6′4″ | XXL/XXXL | |||||||||||||||
| 6′2″ | ||||||||||||||||
| 6′ | ||||||||||||||||
| 5′10″ | UNIVERSALMost Popular Size (L/XL) | |||||||||||||||
| 5′8″ | ||||||||||||||||
| 5′6″ | ||||||||||||||||
| 5′4″ | ||||||||||||||||
| 5′2″ | S/M | |||||||||||||||
| 5′ |
S/M fits workers up to 5 ft 10 in and 170 lb, or up to 190 lb at 5 ft 6 in and under. Universal (L/XL) covers the broad middle and is the most popular size. XXL/XXXL fits workers over 6 ft who weigh over 270 lb, and any worker from 350 to 400 lb. Lighter boundary bands are overlap zones where either size fits: size down for a trim fit or up for room over layers. Some Miller spec sheets list these as Size 1 (S/M), Size 2 Universal (L/XL), and Size 3 (2XL and 3XL). Based on the manufacturer's published Miller sizing chart; verify fit per the user manual before first use.
Who Needs This Product
The T4507 is for workers who need to stop and work at a fixed point: rebar tying, formwork, pole and tower work, and steel connections. The side D-rings accept a positioning lanyard so the worker can lean back against the strap and keep both hands on the task, while the dorsal D-ring stays dedicated to the fall arrest connection. Crews that only need fall arrest can save with the T4500, and workers who want integrated padding should look at the T4577 contractor model.
Features
Side D-Rings
A steel D-ring at each hip accepts a positioning lanyard for hands-free work at a fixed location, keeping the worker stable against the structure.
Sliding Back D-Ring
The dorsal D-ring self-centers between the shoulder blades for the fall arrest connection, independent of the positioning rings.
Hi-Viz Orange Webbing
High-visibility webbing keeps workers conspicuous on active jobsites where equipment and vehicles are moving.
Non-Stretch Polyester
Lightweight polyester webbing with no built-in elastication holds its adjusted fit through the whole shift.
Tongue Leg Buckles
Belt-style tongue buckles give a positive, indexed adjustment workers can set by feel, even with gloves on.
Five Points of Adjustment
Adjustment at the chest, both shoulders, and both legs provides each worker with a custom fit.
Technical Specifications
| SKU | T4507/UAK |
|---|---|
| Product | Titan II Positioning Harness |
| Size | Universal (L/XL) |
| Color | Hi-Vis Orange |
| D-rings | Sliding dorsal (back) plus two side positioning D-rings |
| Chest buckle | Mating |
| Leg buckles | Tongue |
| Adjustment points | 5 (chest, shoulders, legs) |
| Webbing | Non-stretch polyester |
| Max working load | 420 lb / 190 kg including all clothing, tools, and equipment |
| Packaging | Boxed |
| Country of origin | Mexico |
| Standards | ANSI Z359.11; OSHA 1926.502; OSHA 1910.140; OSHA 1926.502(e) positioning; TAA compliant |
| Warranty | Miller Limited Lifetime Warranty against defects in workmanship and materials |
Side D-rings are for positioning only. Connect fall arrest equipment to the back D-ring, and always back up a positioning connection with an independent fall arrest system. Rig the positioning lanyard so free fall is limited to 2 ft or less per OSHA 1926.502(e).
Compliance Standards
ANSI Z359.11
Certified to the ANSI/ASSE Z359.11 standard for full body harnesses, covering design, testing, and marking requirements.
OSHA 1926.502 and 1910.140
Meets OSHA requirements for personal fall arrest system body wear in both construction and general industry.
OSHA 1926.502(e)
The side D-rings support work positioning systems rigged to limit free fall to 2 ft, as OSHA requires for positioning device systems.
TAA Compliant
Listed as TAA compliant by the manufacturer, allowing purchase on federal projects that require Trade Agreements Act sourcing.
Typical Applications
Donning Overview
- Hold the harness by the back D-ring and shake it out so the straps hang free without twists.
- Slip the shoulder straps on like a vest, keeping the webbing flat against the body.
- Connect the chest buckle and position the chest strap across the middle of the chest.
- Fasten each leg buckle so the strap allows a flat hand between the strap and the leg, but not a fist.
- Work through all five adjustment points until the dorsal D-ring rests between the shoulder blades, then stow the strap ends.
Full donning and adjustment instructions are in the Miller harness manual linked in the documentation section below.
Inspection and Retirement
Inspect this harness before each use, and have a competent person other than the user formally inspect it at least annually per ANSI Z359.2. Check each point below and record the results on the inspection form linked in the documentation section.
- Webbing: cuts, frays, burns, chemical damage, UV fading, or broken stitching anywhere on the harness.
- Hardware: D-rings and buckles for cracks, corrosion, distortion, or sharp edges.
- Adjusters and keepers: slippage, missing keepers, or strap ends that will not stay stowed.
- Labels: present and legible, including the size, standards, and serial information.
Retirement triggers: any fall arrest event, any webbing or hardware defect found during inspection, or any condition where the inspector cannot positively verify the harness is fit for service.
Fall ProtectionDistributors, LLC Free Tool · No Signup · OSHA 1926.502 Free Interactive Tool Fall Protection Calculator Pick your system. Run the math. Generate a plan. 1Pick Your SystemDetermine fall restraint vs. fall arrest based on your work surface, edge access, and clearance. 2Run the MathCalculate exact fall clearance required below the work surface for your SRL or lanyard setup. 3Generate a PlanGet a printable OSHA-compliant Fall Protection Plan structured around 29 CFR 1926.502(k).
Frequently Asked Questions
Miller T4507 Titan II Harness Submittals and Documentation
T4507 Specification Sheet (PDF)Technical data, sizing, materials, and SKU-level UPC information. T4507 User Instruction Manual (PDF)Miller I119 manual: donning, adjustment, use limitations, and inspection criteria. Miller Fall Protection Catalog (PDF)The full Miller line: body wear, connecting devices, anchors, and rescue. T4507 Harness Inspection Form (PDF)Printable pass/fail checklist for documented harness inspections.Compatible and Related Products
- Miller T4500 Titan II Non-Stretch Harness. The hi-viz general purpose harness in the same Titan II line.
- Guardian CR5 Class 1 Single Leg Web SRL, 6 ft. A compact web SRL to pair with the dorsal D-ring.
- Guardian 10733 Suspension Trauma Strap, 4-Pack. Add a trauma relief strap to every harness on the crew.
Outfitting a Crew for Positioning Work?
Sizing, D-ring layout, and duty level decide the right harness. Confirm your crew 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.
