It's six feet exactly. 72 inches.
Yes, you can. Cedar resists rot and termites, but a treated 2x4 will hold up fine.
They come 4 boards to the box. Divide the price by 4 to get your answer. They ship for free, by UPS, right to your door. Can't beat that.
Sandra, You are seeing the natural color of the red cedar; there is no stain used on this product.
Yes--two literal inches by four literal inches. Not the usual 1.5 by 3.5.
Depends on how many you want for each section. For a 60 foot long fence, if you place your 4x4 posts at 6 foot on center, that's 10 sections. I started with 3 cedar boards per section. That's 30 boards total. Since they come 4 boards to the box, you'll need 8 boxes (with 2 extras). That gave me a very nice looking fence. I stained them in the workshop before assembling the fence, with Behr Transparent Natural Cedar stain, also available at HD. Don't forget your fence posts. You'll need 11 posts for your 10 sections. Since they come in boxes of 2, you'll need 6 boxes (with 1 extra). I've had a lot of passers-by stop and compliment me on my fence and the shade garden that it protects from the deer; you will, too. The boxes are shipped by UPS, and it takes 1-2 weeks for delivery, but it's worth the wait.