Each box is 1 3/4" x 2 3/8" x 7/8".

Questions & Answers: Tripp Lite HDMI over Dual Cat5/6 Extender Kit, In-Line Transmitter/Receiver, Video and Audio, 1920x1200 1080/24p, Up to 150-ft. (B125-150)

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Tripp Lite HDMI over Dual Cat5/6 Extender Kit, In-Line Transmitter/Receiver, Video and Audio, 1920x1200 1080/24p, Up to 150-ft. (B125-150)

Transmit a HDMI signal up to 150ft, 1080p @ 24Hz using two Cat6 patch cables.
Extends a 1080p @ 24Hz (or 1920 x 1200) signal up to 150 ft. using 24Awg, Solid Wire Cat6* cabling (Tripp Lite N202-Series)
Extends a 3D signal up to 125 ft. using 24Awg, Solid Wire Cat6* cabling (Tripp Lite N202-Series)
Supports 24-bit True Color (8-bits per channel)
Supports DTS-HD, Dolby True HD and 7.1 Channel Surround Sound Audio. When using Cat5 cable, the maximum extension distance is reduced by 50 ft.

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