8 ft Chain Rail Extension Kit

8 ft Chain Rail Extension Kit

  • HEIGHT EXTENSION: Allows your chain drive garage door to handle up to 8 ft. doors

Product Overview

The 8 ft. Chain Rail Extension Kit is used to complete garage door opener installations on chain drive garages with up to 8 ft. garage doors.

Additional Features


  • (1) CMXZDCG478 Steel Rail Extension with Replacement Chain
  • (1) Set of Required Hardware


No Limited Warranty

Unfortunately, this specific product is not eligible for any warranty. Whilst this product is not eligible, further information about our warranties can be located below.

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We take extensive measures to ensure all our products are made to the very highest standards and meet all relevant regulations.