Extron MK 103 (part number 70-897-33) — the widest frame in Extron's MK 100 mounting kit series, covering three gangs.

At 8.15 in across, the MK 103 spans a three-gang MK or British standardized junction box and gives an installer room to place several Extron modules in one wall position. The construction matches the rest of the series: a metal mounting bracket takes the mechanical load, a high-impact plastic frame in white finishes the front, and the whole thing stays 0.39 in deep. It weighs 0.3 lbs. Flex55 modules and active MK modules both mount to it.

Key Capabilities

• Three-gang frame for MK and British standardized junction boxes
• Accommodates Extron Flex55 modules and active MK modules
• Frame measures 3.39 in H by 8.15 in W by 0.39 in D
• Metal mounting bracket with a high-impact plastic front frame
• White finish; 0.3 lbs total weight
• CE marked, RoHS and WEEE compliant, 3-year warranty

Where It Is Used

Lectern and podium faces, boardroom walls, control-room positions and multipurpose teaching spaces where a single wall location has to carry several signal types plus control. Common across UK, Middle East and Asia-Pacific projects using MK-pattern back boxes.

Specifications at a Glance

• Frame: 3.39 in H x 8.15 in W x 0.39 in D (3 gang)
• Weight: 0.3 lbs (0.2 kg)
• Materials: metal bracket, high impact plastic frame
• Compliance: CE, RoHS, WEEE
• Warranty: 3 years parts and labor

Also referenced as Extron MK103, MK-103, part number 7089733.