SEC3-900 Square Professional Crane Man Basket
Product Description
The SEC3-900 is the three-person square model in Lifting Technologies’ Professional crane man basket line, providing a 48″ by 48″ open-top platform for small crews working in compact areas where a square footprint is advantageous. The equal width and length give a balanced work area for up to three workers and tools, allowing flexible orientation to the work face under the crane hook without overhead framing.
Professional-series construction uses a high-strength 0.120″ wall square tubular steel frame with heavy-gauge steel floor grating to support personnel and tools on a durable, slip-resistant surface. Standard guarding consists of 42″ high guardrails from the floor, 6″ high toeboards around the perimeter, and perforated (or expanded metal) side panels from toeboard to mid-rail to contain tools and small objects. An inward-opening access gate with a positive restraining device controls entry and exit, and a full-perimeter inner grab rail serves as continuous anchorage for personal fall-arrest systems per OSHA 1926.502.
The SEC3-900 is 48″ width, 48″ length, with a 900 lb maximum rated load capacity, a 1,125 lb test weight, and approximately 405 lb basket weight. The 900 lb rating is intended for up to three occupants plus their tools, materials, and PPE, with lift planning ensuring the total live load does not exceed 900 lb.
SEC3-900 uses a dedicated suspension system with a four-leg sling assembly of 1/2″ 6×36 IWRC wire rope secured to a master link for crane hook connection. Each sling leg is attached directly to the basket base using swage sockets and safety-threaded clevis pins to form a base-attached hoisting configuration that helps maintain stability and even load distribution under dynamic conditions. A fifth safety leg is provided to connect the basket to the load line above the overhaul ball, further stabilizing the platform and aligning with OSHA 29 CFR 1926.1431 recommendations for suspended personnel platforms.
Every SEC3-900 is proof-load tested at 1,125 lb—125% of the 900 lb rated capacity—prior to shipment. The SEC3-900 includes detachable test weights or test-weight provisions, the sling assembly, and training/Use and Safety Handbook materials, as well as proof-load certificates and inspection checklists.
SEC3-900 fits applications where a three-person crew needs a compact square platform without overhead protection—for example, when overhead hazards are limited or controlled by work planning, and where unrestricted overhead reach and lower basket weight are valuable compared with overhead-equipped SECO models.
Industrial Applications
Construction & Structural
On construction and structural jobs, SEC3-900 supports three-person tasks such as joint inspection, multi-worker welding or bolting operations, and small finishing work along beams, columns, and platform edges. The 48″ × 48″ square footprint provides substantially more space than SEC1-300 while remaining more compact than long rectangular baskets, balancing maneuverability and crew room.
The open-top design suits work where overhead falling-object risk is minimal or controlled administratively, letting the crew reach upward and outward without interference from an overhead frame.
Industrial Plants & Maintenance
In industrial facilities, the SEC3-900 is appropriate when three technicians must be in the basket together, for example during equipment access, pipe rack work, or platform-edge tasks requiring multiple disciplines (mechanical, electrical, inspection). The square plan gives each worker a corner or side area while keeping the basket footprint manageable in crowded plant environments.
Perforated sides and 4″ toeboards help control dropped-object risks, while the full-perimeter grab rail supports tie-off for all three harnessed workers in line with plant fall-protection rules.
Utilities & Infrastructure
For utilities and infrastructure, SEC3-900 can be used for three-person inspection and minor repair work at discrete points—such as certain parapet segments, access galleries, or structural junctions—where a square work zone is sufficient and linear coverage over long distances is less critical than in rectangular RECO models.
Its open-top configuration and relatively compact 48″ × 48″ footprint make it suitable for use in areas with overhead clearance constraints or where free vertical reach is necessary, provided overhead hazards are managed via traffic control and dropped-object prevention.
Features & Benefits
Three-Person Square Work Area: The 48″ × 48″ open-top square platform provides a shared workspace for up to three workers and tools, offering more room than smaller square baskets while maintaining a compact, symmetric footprint.
Professional-Series, OSHA-Aligned Construction: SEC3-900 uses 0.120″ wall square tubular steel, heavy-gauge floor grating, 42″ guardrails, 6″ toeboards, perforated side panels, an inward-opening gate, and a full-perimeter inner grab rail to align with OSHA 1926.502 fall-protection practices.
Base-Attached Four-Leg Sling With Safety Leg: A four-leg 1/2″ 6×36 IWRC wire rope sling assembly attached directly to the base, combined with a fifth safety leg to the load line above the overhaul ball, provides stable, OSHA 1926.1431–oriented hoisting of personnel.
125% Proof-Load Tested and Fully Equipped: Each SEC3-900 is proof-tested to 1,125 lb (125% of the 900 lb rating) and includes LT’s unique test weight system, sling assembly and video training, along with proof-load certification and inspection documentation.
Durable Powder-Coat Finish and Customization: Professional baskets use an electrostatic powder-coat finish (typically solid red, with safety-yellow on key components) for impact and corrosion resistance, and may be customized in color and some configuration details to meet customer or project requirements.
Frequently Asked Questions
What are the SEC3-900 dimensions and ratings?
The SEC3-900 is a 48" × 48" square basket with a 900 lb maximum rated load capacity, a 1,125 lb proof-test weight, and an approximate basket weight of 405 lb.
How many people can SEC3-900 carry?
SEC3-900 is designed for up to three occupants, with the combined weight of personnel, tools, materials, and PPE not exceeding the 900 lb rated capacity.
Does SEC3-900 include overhead protection?
No. SEC3-900 is an open-top square Professional model; overhead-protected square baskets are designated as SECO-series, such as SECO3-900.
What OSHA rules does SEC3-900 support?
The design supports OSHA 29 CFR 1926.1431 for hoisting personnel with cranes and OSHA 1926.502 Subpart M for fall protection, including requirements on guardrail height, toeboards, side enclosure, anchorage, and proof-load testing at 125% of rated capacity.
What comes standard with SEC3-900?
The SEC3-900 is a three-person Square Professional Model Man Basket equipped with LT’s unique test weight system, sling assembly and training video, and typically ships with the platform, four-leg sling and safety leg, test-weight system, Use and Safety Handbook/training materials, proof-test certificate, and inspection checklist.
When is SEC3-900 preferred over SEC2-600 or SECO3-900?
SEC3-900 is chosen when three-person crews need a square, open-top basket and overhead hazards are limited; SEC2-600 suits two-person tasks, and SECO3-900 is appropriate when the same 48" × 48" footprint is needed but with integrated overhead protection.
Find Out More
For other square Professional baskets without overhead protection, see SEC1-300, SEC2-600, and SEC4-1200 (where listed).
For square Professional baskets with overhead protection, see SECO1-300, SECO2-600, SECO3-900, and SECO4-1200.
For heavier-duty Premier series overhead models, see the Premier Crane Man Basket and Premier Man Basket (Round) pages.