i have model139.53976srt garage door opener being used to open an 8' garage door. is there an extension kit for this opener to adapt to an 8' door?
Sure there is. If you go to sears.com and enter opener in the "what are you looking for" you will find 8' extension kits. They usually are 49 dollars or so and come with the extended rail and the chain. item-00953726000 model-53726
It goes together exactly like the 7' Make sure and do a 2x4 safety test after all adjustments. Also we recommend surge protectors on all openers. (00 joules or higher. Thanks BBMember
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