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Silver 21.3-inch aluminum cinema rail with dovetail and threaded mounts

Really Right Stuff

Really Right Stuff 21.3" Multi-Purpose Cinema Rail camcorder accessory

SKU CH-Y0QH-BMZK1

A 21.3" cinema rail with 1.5" dovetails, alternating 1/4"-20 and 3/8"-16 sockets spaced 15mm apart, and side 1/4"-20 sockets at 9mm intervals

  • Built for professional rigs with 6061-T6 aluminum construction
  • 14 % lighter per inch yet 25 % stiffer than standard bars
  • 5" dovetails top and bottom accept all RRS quick-release clamps
  • Alternating 1/4"-20 and 3/8"-16 sockets spaced 15 mm for secure mounting
  • Laser-engraved 5 mm markings enable repeatable camera positioning

21.3" Multi-Purpose Cinema Rail

The 21.3" Multi-Purpose Cinema Rail from Really Right Stuff is a camcorder accessory designed for professional video environments. It provides versatile mounting options for cameras, monitors and other essential equipment. The rail integrates with various support systems to enhance stability and control during critical shooting scenarios. It suits serious videographers who need a durable and adaptable accessory bar.

Upgrade from traditional camera bars

This cinema rail is crafted from extruded 6061-T6 aluminum, making it 14% lighter per inch and 25% stiffer than traditional camera bars from the same maker. The jump is worth it when a rig demands reduced weight without sacrificing rigidity for professional-grade cameras and accessories. It replaces older bars that lack the same strength-to-weight ratio and precise adjustment features. Builders who need the original bar dimensions or mounting pattern will not gain from this change.

Limits of the dovetail and thread standard

The rail uses 1.5" dovetails on top and bottom for compatibility with specific quick-release clamps. Threaded sockets are 1/4"-20 and 3/8"-16 on the top and bottom at 15mm spacing, and 1/4"-20 on the sides at 9mm spacing. Equipment requiring different dovetail widths or thread pitches cannot mount directly. The available lengths range from 180mm to 540mm, so rigs needing spans outside that range cannot use this system.

Highlights

  • Built for professional rigs with 6061-T6 aluminum construction
  • 14 % lighter per inch yet 25 % stiffer than standard bars
  • 5" dovetails top and bottom accept all RRS quick-release clamps
  • Alternating 1/4"-20 and 3/8"-16 sockets spaced 15 mm for secure mounting
  • Laser-engraved 5 mm markings enable repeatable camera positioning

Specifications

No published specifications for this item yet.

Questions about this item

What is the length of the 21.3" Multi-Purpose Cinema Rail and which dovetail standard does it use?

The rail measures 21.3 inches and features 1.5" dovetails on both top and bottom, matching all RRS quick-release clamps.

How do I mount accessories to the top and bottom slots, and what spacing error should I avoid?

Use the alternating 1/4"-20 and 3/8"-16 threaded sockets spaced 15mm apart; the common mistake is assuming uniform thread size instead of alternating.

What ongoing care does the 6061-T6 aluminum rail need, and when should I check the threads?

Wipe the extruded 6061-T6 aluminum after each shoot and inspect the 1/4"-20 and 3/8"-16 sockets every few months for debris or cross-threading.

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