VEVOR Hardware Cloth, 1/2 inch 36in x 50 ft 19 Gauge, Hot Dipped Galvanized Wire Mesh Roll, Chicken Wire Fencing, Wire Mesh for Rabbit Cages, Garden, Small Rodents
The so-called height refers to the width of the net. 100 feet depends on the width. If it is 24", the height is only 0.61m, and the height of 36" is 0.914m.
You can use either landscape staples or spikes, both will hold to ground. If your raised beds are wood boxes, you can mount to inside bottom of of the box with smaller staples
