TRSMIMA Confined Space Tripod Kit (1200 lb) Review

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The TRSMIMA kit is the cheapest complete tripod-and-winch system in our confined space collection — about a seventh the price of a certified-brand package. For crews formalizing manhole or tank work that has been done off a ladder and a prayer, it puts a real retrieval point over the hole for under $300.

Editorial rating: 4.2/5. A functional budget entry system with honest limits: verify its paperwork against your program before relying on it for permit-required entries.

Key specs

Listed at $284.99 on Amazon when we captured pricing (2026-07-11) — the button shows the live price.

Who it's for

Municipal contractors, septic and vault services, and small crews making their first move from improvised entry to a proper tripod system — especially where entries are occasional rather than daily.

Skip it if

Safety programs that require documented ANSI Z359 test data. TRSMIMA lists capacity numbers but certification paperwork isn't published the way DBI-SALA or FallTech documentation is — if your auditor asks for test certs, spend up.

How it fits a permit-required entry system

A kit like this covers the retrieval-system requirement in 29 CFR 1910.146(k)(3) for winch-based plans. Confirm whether your rescue plan also demands independent fall arrest — that's the 3-way SRL question — before calling the system complete. New to the category? Start with the confined space equipment collection overview, which walks the winch-vs-SRL decision and ventilation sizing.

How it compares

vs VEVOR 1800 lb kit: adds capacity and an included harness for ~$85 more. (Our take: full VEVOR 1800 lb kit review.)

vs FallTech 7507: the certified-brand equivalent at ~7× the price. (Our take: full FallTech 7507 review.)

Pros and cons

Pros

• Complete system (tripod + winch + cable + bag) under $300
• 98 ft of cable covers deep municipal entries
• 7 ft adjustable legs match name-brand working heights

Cons

• Certification documentation not published like certified brands
• 1,200 lb rating is listing-stated — verify for personnel use in your program
• No 3-way SRL means no independent fall arrest

Build out the rest of the entry program

Retrieval hardware is one leg of a permit program. Test atmospheres with a 4-gas monitor (see the H2S monitor guide and industrial CO monitors), fit every entrant with a full-body harness from the harness collection, isolate energy with lockout/tagout, and stage a trauma kit at the opening. Where atmospheres can't be cleared, step up to supplied-air respirators or a PAPR system. Rules and rationale: when fall protection is required, OSHA ladder requirements, and assigned protection factors. Browse everything in the confined space equipment collection or the wider fall protection range, including self-retracting lifelines and fall protection kits.

Related confined space reviews

Start with the ranked best confined space tripod kits guide for the full 12-system comparison.

• VEVOR Confined Space Tripod Kit (1800 lb) review
• VEVOR Confined Space Tripod Kit (2600 lb) review
• MSA 10102002 Workman Tripod (8 ft) review
• 3M DBI-SALA 8000140 Confined Space Aluminum Tripod review
• 3M DBI-SALA 8000141 Confined Space Aluminum Tripod (Tall) review
• FallTech 7507 Confined Space Tripod Kit review
• FallTech 7509 Confined Space Tripod Kit with 3-Way SRL review

Confined space equipment FAQ

Do I need this equipment for every confined space entry?

Permit-required confined spaces under OSHA 29 CFR 1910.146 need a retrieval system unless it would increase risk or wouldn't help rescue, and vertical entries deeper than 5 feet require a mechanical retrieval device. Non-permit spaces still deserve ventilation and testing — classification comes first.

What's the difference between a winch and a 3-way retrieval SRL?

A winch raises and lowers under control but doesn't arrest falls. A 3-way SRL arrests a fall instantly and then cranks over into retrieval mode. Rescue-ready systems typically run both: the entrant on the SRL, the winch as the working line.

Are import-brand kits (VEVOR, TRSMIMA) OK for permit entries?

OSHA sets performance requirements rather than certifying products. Certified brands publish ANSI Z359-family test documentation; import listings state capacities but documentation varies. Verify what your written program requires before standardizing on them.

What else does a compliant entry need besides retrieval hardware?

Atmospheric testing with a calibrated 4-gas monitor, continuous ventilation, an attendant, communication, a written rescue plan, lockout/tagout on connected energy, and trained entrants. Hardware supports the program — it doesn't replace it.

Does ventilation make a space safe to enter?

No. Ventilation reduces contaminant levels; the entry decision rests on gas-monitor readings taken after ventilating. If readings stay outside limits, the answer is supplied-air respiratory protection and a revised plan, not more airflow.

How do I size cable length for my entries?

Match line length to your deepest entry with margin, and check winch cable and SRL working length separately when a kit includes both — they're rarely identical.

Can the personnel winch lift tools and materials?

Keep a dedicated material line. The man-rated winch stays rigged for the entrant; hauling gear on it risks dropped objects and takes your rescue line out of service.

How often does this equipment need inspection?

Before each use by the user, plus formal periodic inspection per the manufacturer's schedule (commonly at least annually by a competent person). SRLs additionally follow the maker's recertification requirements.

What harness works with these systems?

A full-body harness with a dorsal D-ring for SRL fall arrest; many programs also spec shoulder D-rings for vertical winch retrieval. Fit matters more than brand — see our harness buyer's guide for sizing.

Who is allowed to perform confined space rescue?

Your written plan decides: non-entry retrieval by the attendant using this hardware is the first answer. Entry rescue requires a trained, equipped rescue team — never an improvised grab by coworkers, which is how multiple-fatality incidents happen.

Do these products come with affiliate pricing markup?

No — the Amazon buttons link to the same public listing anyone sees. WC Safety earns a commission from Amazon at no extra cost to you, which funds this testing-free, spec-honest review format.

Where do gas monitors fit into the budget?

Before everything else. If the budget forces sequencing, a calibrated 4-gas monitor precedes retrieval hardware, because testing determines whether entry is permissible at all.

Is a kit better than buying components?

Kits cost less than assembling equivalent pieces and arrive rig-ready; components win when you're standardizing across crews or matching hardware you already own.

Does this kit include a harness?

Only where the listing says so (the VEVOR 1800 lb kit includes one). Treat bundled harnesses as starters — a properly fitted harness is a separate line item.

Can I add a 3-way SRL to this kit later?

Usually yes via standard brackets, but buying it upfront (or choosing a kit that includes one) is cheaper than retrofitting after your rescue plan gets audited.

How we review

WC Safety reviews are spec-honest: we work from the manufacturer's published data and the live Amazon listing, flag any claim that exists only in listing copy ("per the listing"), and never invent certifications or test results. Where certified-brand documentation (ANSI Z359 family) exists we say so; where it doesn't, we say that too.

Sources

OSHA 29 CFR 1910.146 (permit-required confined spaces); manufacturer product pages and the Amazon listing linked above; ANSI/ASSP Z359 fall-protection standard family (referenced, not reproduced).

Reviewed by Steven Eaton, WC Safety — workplace PPE retailer and Amazon Associate. Pricing captured 2026-07-11; click through for current pricing.