Titan II Non-Stretch Full Body Harness, Hi-Viz
The Miller T4500 Titan II is the hi-viz compliance harness that keeps a whole crew visible and tied off without blowing the equipment budget: lightweight, non-stretch polyester webbing, five points of adjustment, a mating chest buckle, and tongue leg buckles that workers already know how to use. It is the harness Miller has built its jobsite reputation on since 1944.
Certified to ANSI Z359.11 and compliant with OSHA 1926.502 and 1910.140, the Titan II supports a 420 lb maximum working load including clothing and tools. A sliding back D-ring keeps the dorsal connection centered between the shoulder blades, and four stocked sizes from S/M to 3XL fit nearly any worker.
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 Titan II T4500 is built for general construction and industrial crews that need a certified, easy-to-fit harness on every worker without paying for padding and hardware they will not use. The hi-viz orange webbing doubles as a visibility layer on active sites, the non-stretch polyester holds its shape through long shifts, and the familiar mating chest buckle and tongue leg buckles mean nobody needs a lesson to put it on correctly. Workers who want a front D-ring for ladder climbing should look at the T4500FD configuration, and crews that want integrated shoulder pads should look at the Titan II contractor models.
Features
Hi-Viz Orange Webbing
High-visibility webbing keeps workers conspicuous on active jobsites, adding a layer of visibility to the crew when equipment and vehicles are moving.
Sliding Back D-Ring
The dorsal D-ring slides along the back strap to self-center between the shoulder blades, promoting proper dorsal alignment and improved comfort after a lanyard or SRL is connected.
Non-Stretch Polyester
Lightweight polyester webbing with no built-in elastication, so the harness holds its adjusted fit through the shift instead of loosening as the day goes on.
Mating Chest Buckle
The interlocking mating buckle seats positively across the chest and is simple to verify visually, with no springs or moving parts to foul with dirt or ice.
Tongue Leg Buckles
Belt-style tongue buckles on the leg straps give a positive, indexed adjustment that 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 across the full S/M to 3XL size range.
Technical Specifications
| SKU | T4500 (see size table for full ordering SKUs) |
|---|---|
| Product | Titan II Non-Stretch Full Body Harness |
| Sizes | S/M, Universal (L/XL), 2XL, 3XL |
| Color | Hi-Vis Orange |
| D-ring | Sliding dorsal (back) |
| 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 | Bagged each |
| Country of origin | Mexico |
| Standards | ANSI Z359.11; OSHA 1926.502; OSHA 1910.140; TAA compliant |
| Warranty | Miller Limited Lifetime Warranty against defects in workmanship and materials |
Sizes and Ordering Information
| Size | SKU | UPC |
|---|---|---|
| S/M | T4500/S/MAK | 612230028138 |
| Universal (L/XL) | T4500/UAK | 612230028169 |
| 2XL | T4500/XXLAK | 612230028176 |
| 3XL | T4500/XXXLAK | 612230155728 |
All sizes on this page are selectable from the size options above. The Universal (L/XL) size fits the majority of workers.
Fit before the first step up. Adjust all five points so the dorsal D-ring sits between the shoulder blades, the chest strap crosses mid-chest, and the leg straps allow a flat hand but not a fist. A harness that has arrested a fall is done: remove it from service immediately.
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.
TAA Compliant
Listed as TAA compliant by the manufacturer, allowing purchase on federal projects that require Trade Agreements Act sourcing.
CSA Listing
The manufacturer product listing states the Titan II meets CSA standards. Verify the CSA marking on the harness label before use on Canadian jobsites.
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 hi-viz webbing flat against the body.
- Connect the mating chest buckle and position the chest strap across the middle of the chest.
- Fasten each tongue 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 sliding dorsal D-ring rests between the shoulder blades, then tuck the strap ends into the keepers.
Full donning and adjustment instructions are in the Miller harness manual linked in the documentation section below.
Inspection and Retirement
Inspect the T4500 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: the dorsal D-ring, chest buckle, and tongue 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 T4500 Titan II Harness Submittals and Documentation
T4500 Specification Sheet (PDF)Technical data, sizing, materials, and SKU-level UPC information. T4500 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. T4500 Harness Inspection Form (PDF)Printable pass/fail checklist for documented harness inspections.Compatible and Related Products
- Guardian CR5 Class 1 Single Leg Web SRL, 6 ft. A compact web SRL to pair with the dorsal D-ring.
- FallTech ElasTech Shock Absorbing Lanyard, 6 ft. An energy-absorbing lanyard alternative for anchor points at or above the D-ring.
- Guardian 10733 Suspension Trauma Strap, 4-Pack. Add a trauma relief strap to every harness on the crew.
Outfitting a Crew with Harnesses?
Sizing, buckle styles, 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.
