Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: How long is the total track length of the 8-feet extension?
Document: Among new garage doors, 8 feet is the standard length. Nowhere on the traditional add did it mention that the garage door opener would not work for 8 feet. After buying and setting up, only then did we realize that the &#34;standard&#34; height was not really standard. For Chamberlain to allow you to order initially would maybe cost an extra $5 tops...and that would be being generous.
If you home was built within the past 15 years, your garage door is likely 8 feet all and YOU WILL NEED THIS EXTENSION. It blows my mind that these extensions are not included with the unit itself, but it is what it is.This kit comes with an extension bar, a longer belt, and all of the necessary hardware. It was my first experience installing a garage door opener and I was very pleased with the ease of installation for these Chamberlains.
This extension was exactly what was needed in order for the craftsman belt drive garage door opener to function correctly on an 8 ft door.After installing a standard belt drive craftsman door opener on an 8 foot door I could see that the traveling distance was going to be limited as the stock belt was insufficiently long. The traveling carriage was &#60; 1 inch from the stop tab near the garage door and we did not put a stop nut in at the motor unit to allow the door its full range.
You need this. I assume that 7 foots ones are more common - but if you have an 8 foot door you need this. I would greatly prefer Chamberlain to make two models as what your left with is trash - a short piece of track and a useless belt.
Needed to extend my opener track since I have 8foot doors. Not much more to say here. Its just an extension track with a full belt. It does come with an additional opener mounting bracket which you may not need if you also bought say the HD962EV or WD962KEV opener as they come with it. Also comes with a longer release cable then what comes with the opener. Also comes with another Spring tensioning nut, although you shouldn't need this either as the opener itself came with it.
The opener by itself works without the extension kit. Overpriced for 1 arm and 1 belt. Should have included extra long wires. You would think with a taller door, the ceiling might be taller too. If your door is 8feet tall, I'd recommend trying it without the extension kit before the overpriced kit.
This is a necessary addon part for the Chamberlain garage door openers. (Assuming, of course, that your garage door is 8-feet tall.) But: most doors are. It is a very rare garage door these days that would work with the &#34;base kit&#34; that comes with a Chamberlain opener.So, please, if you are going to install a Chamberlain garage door opener, you MUST go out to the garage and measure your door. You can't just guess.
If you have an 8 foot garage door and buy a Chamberlain belt drive opener, you will need this. The kit comes with replacement parts for the belt, disconnect rope, and one length of the rail. The instructions included tell you exactly what to do with these parts (for new installation it is really incredibly simple.
I may be wrong, but these days aren't 8 foot garage doors standard? in which case if really feels like Chamberlain (aka craftsman) is screwing you over a bit by making you buy this extension. I think the openers should be 8ft standard, with a 7ft option for purchase. Of course being that I have an 8ft door that's what I think :-)Or, even better, they should have a way to adjust one belt to fit either way.
Fits in place of one section of your track that comes with the opener. It's made from the same metal stock as your track that comes with the opener. The installation instructions are even in the manual that come with the opener. Easy fit and a must for the taller garage doors. Installed it along with and at the same time as the opener. No issues at all.
Answer: yes