Malta Dynamics A6320 / A6321 Standard Roof Anchor
The Malta Dynamics Standard Roof Anchor is a fixed-post anchorage connector built for permanent installation on metal, wood, or concrete roofs. The galvanized steel post rises above the finished roof surface to give a crew a visible, always-accessible tie-off point for new construction and ongoing maintenance.
Choose the 12 inch post (A6320) for standard roof build-ups, or the 18 inch post (A6321) when deeper flashing, insulation, or decking layers call for extra clearance above the surface. Both share a 5,000 lb minimum breaking strength, a 130 to 310 lb single-worker capacity, and a galvanized finish for long corrosion resistance. The round post fits most standard pipe-flashing kits for a clean, watertight install, and each height ships with its own Malta Dynamics Declaration of Conformity backed by independent ISO 17025 lab testing.
Who Needs This Product
The Standard Roof Anchor is a permanent, fixed-post anchorage connector - the tie-off point of a personal fall arrest or restraint system on a finished roof. It is designed for a single worker, who still needs an ANSI full-body harness and a compatible connecting device such as a self-retracting lifeline, vertical lifeline with rope grab, or a shock-absorbing lanyard. Because the post extends through the roofing and pairs with standard pipe flashing, it suits both new construction and long-term rooftop maintenance, including window-cleaning anchorage that meets IWCA I-14.1.
Features
Two post heights
The 12-inch A6320 fits standard roofs; the 18-inch A6321 clears deeper flashing, insulation, or decking build-ups. Pick the height your roof assembly needs.
Accessible tie-off point
The post extends past the roofing substrate so the attachment point stays above the finished surface, visible and within reach.
Fits standard flashing
The round post works with most standard pipe-flashing kits for a clean, waterproof install that lasts for years.
Galvanized steel
Heavy-duty galvanized steel with a 3/8 inch plate stands up to weather and corrosion for permanent rooftop service.
Metal, wood, or concrete
Engineered fastener schedules for metal decking, wood decking, and concrete slabs allow a single anchor design to serve nearly any roof.
Independently verified
Each height carries a Malta Dynamics Declaration of Conformity with third-party testing performed under ISO 17025 accreditation by Intertek.
Technical Specifications
| SKUs | A6320 (12 in post) and A6321 (18 in post) |
|---|---|
| Type | Fixed-post roof anchor, permanent installation |
| Users | 1 worker (single user) in fall arrest or fall restraint |
| Worker capacity | 130 to 310 lb, including tools and equipment |
| Minimum breaking strength | 5,000 lb |
| Post heights | A6320: 12 in post (14.125 in overall) | A6321: 18 in post (20.125 in overall) |
| Base plate | 16 in galvanized steel plate, 3/8 in (0.375 in) thick |
| Material | Galvanized steel post and plate |
| Weight | A6320: 32.7 lb | A6321: 35.3 lb |
| Substrates | Metal decking (20 ga minimum), wood decking (5/8 in minimum), or concrete slab (2,000 psi, 6 in thick) |
| Fasteners - metal | 40 x #14, 2-1/2 in hex-head screws (or 40 Fab-Lok fasteners), penetrating the deck at least 1/4 in (not included) |
| Fasteners - wood | 40 x #14, 2-1/2 in hex-head screws fully embedded in the decking (not included) |
| Fasteners - concrete | 8 x 1/2 in Hilti HAS-E rods with HIT-HY 200 epoxy, 3-1/2 in minimum embedment, set at least 8 in from all edges (not included) |
| Connector requirement | Compatible SRL, vertical lifeline with rope grab, or shock-absorbing lanyard (6 ft maximum free fall); ANSI full body harness |
| Operating temperature | -30 F to +130 F |
| Compliance | OSHA 1910; OSHA 1926 Subpart M; ANSI Z359.18-2017; IWCA I-14.1 (window cleaning) |
| Warranty | 1 year limited (Malta Dynamics) against factory defects in workmanship and materials |
Fasteners and structure carry the load. The Standard Roof Anchor is only as strong as what it is fastened to. Fill the complete fastener pattern for your substrate with the specified corrosion-resistant fasteners, never reuse fasteners, and have a competent person verify the structure can support a 5,000 lb anchorage load. This is a single-user, permanent anchor - calculate fall clearance and swing fall before tying off.
Compliance Standards
ANSI Z359.18-2017
Anchorage connectors standard - the A6320 and A6321 are designed and tested to this standard.
IWCA I-14.1
Window cleaning safety standard: these anchors meet the requirements for window-cleaning anchors.
OSHA 29 CFR 1926 Subpart M
Construction fall protection, including anchorage strength requirements under 1926.502(d).
OSHA 29 CFR 1910
General industry personal fall protection anchorage requirements.
Typical Applications
Installation Overview
Install per the Malta Dynamics user instruction manual. The sequence below is an overview only.
- Inspect. Check the plate, post, attachment point, galvanized finish, and labels before installation and each use.
- Verify structure. Confirm that the metal deck, wood deck, or concrete slab meets the minimum substrate requirement and can support a 5,000-lb anchorage load, as verified by a competent person.
- Position. Locate the anchor per the manual; on concrete, keep it at least 8 in from all edges. Set the pipe flashing over the post to ensure a watertight seal.
- Fasten. Use the schedule for your substrate - 40 metal screws or Fab-Lok fasteners, 40 wood screws, or 8 Hilti HAS-E epoxy rods - and fill every fastener hole. Use corrosion-resistant fasteners and never reuse them.
- Connect. Clip a compatible SRL, vertical lifeline with rope grab, or shock-absorbing lanyard and an ANSI full body harness to the post - one worker only, with 6 ft maximum free fall.
- Verify clearance. Confirm fall clearance and swing-fall geometry below the work surface before work begins.
Inspection and Retirement
Inspect before each use, with a documented competent-person inspection at least every 12 months recorded in the manual inspection log and on the equipment grid label. Remove the anchor from service for any of the conditions below.
- Post and plate: bending, cracks, elongated fastener holes, or corrosion beyond surface discoloration.
- Attachment point: deformation, nicks, burrs, or sharp edges - any sign of deformation means the anchor must not be used.
- Fasteners: stripped, loose, missing, or corroded - re-fasten per the manual before use.
- Galvanized finish: deep gouges exposing bare steel to rust.
- Labels: must remain legible and intact.
Retirement triggers: any fall-arrest event or any deformation of the post, plate, or attachment point. After a fall the anchor must be removed from service permanently.
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Frequently Asked Questions
Malta Dynamics Standard Roof Anchor Submittals and Documentation
Standard Roof Anchor Spec Sheet (PDF)Key features, capacity, materials, weights, and compliance summary for both post heights. Standard Roof Anchor User Instruction Manual (PDF)Fastener schedules by substrate, installation, flashing, inspection log, and warranty. A6320 12" Declaration of Conformity (PDF)Conformity statement for the 12 in post with ISO 17025 third-party test verification by Intertek. A6321 18" Declaration of Conformity (PDF)Conformity statement for the 18 in post with ISO 17025 third-party test verification by Intertek.Compatible and Related Products
- Malta Dynamics A6304 4-Way Anchor Plate. A temporary, reusable multi-directional roof anchor for metal, wood, and concrete.
- Malta C7050 50 ft Vertical Lifeline Assembly. Rope lifeline and rope grab to connect a harness to the post anchor.
- Malta B2002 Warthog Full Body Harness. ANSI full body harness to complete the personal fall arrest system.
- Malta Dynamics A8000 Reusable Truss Anchor. A wood-truss anchor for attic and new-construction tie-off.
