Weatherables vinyl fencing offers both seclusion and sophistication. All of our 6’ tall and shorter vinyl privacy panels can be installed to withstand wind gusts of up to 130 mph (hurricane force winds). Vinyl fence panels available in white, tan, khaki and gray colors, with heights ranging from 4. Basically for a 6′ fence, you want a post near the top, bottom, and middle to hold up the fence and keep the pickets straight. For a shorter fence, two rails could suffice. In any case, to start, use the guides to make marks at 10, 30, and 60 inches on the first post. Clamp one of the guides, say the 60″, to the second post.