Review on Chamberlain G8808CB-P Garage Door Opener 8 Ft Rail Extension Kit - Compatible with Whisper Drive Plus Models and Includes Replacement Belt by Jemar Lorenzo

Good product but criminal marketing. So you pay $300 for a garage opener. Revain doesn't make it clear that you need this extension when you open the box, put everything on the shelves and read the instructions if your garage door is over 7 feet long. They repack everything and find the kit. It's almost $50. For a rail that is 1ft longer than what you have and a cable that is said to be 2ft longer than what you have. The additional material for this expansion kit costs less than $1. But you MUST buy it for $50 - 15% of the total cost of the original kit. I'd rather pay 10 euros more and get both parts at the same time. This looks like a scam from a legitimate company. The finished product is great, but it was a bitter pill to swallow.