Lowes. They have all three. I,II,and III. I agree with not needing screws, but to help with clamping, they can be useful. If you are to keep them in, here is the deal........make them 4inches apart minimum and after pre-drill, put glue in the holes so when you screw them in, they seal better over time.this should help those who have problems with them vibrating out.where do u get that titebond II stuff i could not find it anywhere
Great idea! I used to use an air compressor with nails in the beginning. Worked very well.8-10" across larger spans, like 4ft+. I normally use three screws on most other stuff that's like 12-18" tall, one in the middle and 2" in from each corner. I think I'm going to start using a staple gun though, much quicker.