Nobody mentioned it, so possibly others aren't aware. What I have found buying some griz these last few years are on all of the tools I have looked at anyhow, they have down near the pictures a box with a video. Sometimes it is a comparison video between several like sized tools, but always they go over the dimensions of the shipping box, and the weight. OP didn't say which griz 20" planer so I picked the lowest priced one with a shellix head, and there was a set up video, but no box dimensions.
The video for the Grizzly G1033X - 20" 5 HP Spiral Cutterhead Planer
had 2 videos, and on the "comparison" vid they showed the 4 handy pull out lifting rods, where a forklift, or lifting straps for use with a hoist could gain purchase. Having a big scar on my back from silly lifting as a younger man. I like mechanical advantages now to brute force, but hey, it's your back
Dimensions for the smaller 20" planers are 30" wide x 42" deep x 48" tall with a weight of 909#.
I'd call my buddy Phil, and his Bobcat-a-forklift