Extended fly adds 8' length to a normal size fly for your tent.  Provides a shaded and protected area to front of tent.

Extended fly will have stove pipe opening with a tie down flap in the extended section as some people use a stove for cooking outside the tent.

Extended fly only has a shipping bag. Not a larger storage bag.

8 x 10 extended fly will have 2' extension to rear of tent and 8' extension to front.

8 x 10 will have 1 foot overhang on stove tent side and 3' overhang on other side.

8 x 10 extended fly is the same as a 10x12 extended fly, that is why there is additional extension to back and additional side overhang. 

Normal fly overhang on both sides of tent is 8-12 inches.

There is no guarantee on extended flys in windy conditions.  There is no extended fly made that can withstand normal extended fly placement on a tent in windy condition. During windy conditions, take the extended fly down to prevent wind from getting under the fly.  Extended flys flapping in the wind will tear out the grommets and eventually tear the extended fly to shreds.