Godox CR-B01 Round Diffuser Flap for AD300Pro & AD400Pro

Take command of your light with the Godox CR-B01, a round barn door engineered to deliver surgical beam control for the AD300Pro and AD400Pro flash units. Its four independently adjustable aluminum alloy leaves let you sculpt light with precision, eliminating unwanted spill and directing illumination exactly where you need it—perfect for portrait, product, and studio photography.

Overview

The CR-B01 attaches via a quick-release bayonet mount, locking securely onto your Godox flash in seconds. Durable metal construction ensures reliable performance in demanding studio environments, while the lightweight and compact design keeps your kit portable. With an effective diameter of approximately 155 mm, this barn door is perfectly matched to the output of the AD300Pro and AD400Pro, allowing you to shape the beam without sacrificing power.

What stands out

• Four individually adjustable leaves for precise beam shaping and spill control.
• Quick-release bayonet mount for fast, secure attachment to Godox AD300Pro and AD400Pro.
• Durable aluminum alloy construction built to withstand daily studio use.
• Lightweight and compact design—easy to carry and store.
• Effective diameter of approx. 155 mm optimised for the AD300Pro/AD400Pro beam.

Technical details

• Accessory type: Barn door
• Shape: Round
• Number of leaves: 4
• Material: Aluminum alloy
• Compatibility: Godox AD300Pro, Godox AD400Pro
• Mounting system: Godox mount (proprietary)
• Function: Light beam shaping, light spill control
• Adjustability: Individually adjustable leaves
• Color: Black

Our verdict

The Godox CR-B01 is an essential modifier for AD300Pro and AD400Pro users who demand clean, directed illumination. Its robust build and precise control make it a reliable addition to any studio kit.