Walmart Mosquito Net This would fit right over my 24" x 72" raised bed frames.
https://www.walmart.com/ip/Coghlans-Mosquito-Net/21863736
Size: 32” x 78” x 59” - $11.53
In feet: 2.66’ x 6.5’ x 5’ = 86.45 sq ft for $12
10’ x 50’ = 500 sq ft for $24
85% light transmission
Agfabric seems to be a popular insect netting. https://duckduckgo.com/?q=agfabric+insect+netting
4’ x 100’ for $38 - https://www.ebay.com/itm/334482763796?hash=item4de0b9f014:g:J80AAOSweWlitCS9
Assortment of sizes - https://www.amazon.com/Agfabric-Netting-Protect-Flowers-Squirrels/dp/B016UCBZBO?th=1
Website - https://www.agfabric.com
They also make various sized bags including some big enough to go over fruit trees.
Ebay - agfabric insect netting - lowest to highest price - https://www.ebay.com/sch/i.html?_from=R40&_nkw=agfabric+insect+netting+&_sacat=0&LH_TitleDesc=0&_sop=15
See Pollards subsequent post for a number of Reemay and Agribon fabrics. Some sources are also listed in the Gardening info in his Prepper links. Pollard's prepper links
These are great products for protecting young plants from insects or cold or hail! Larger sizes are available for small vegtable or truck gardens. I used some of these in making the row covers shown at:
https://freerepublic.com/focus/f-chat/4059165/posts?q=1&;page=101 I think post 107.

The idea for the Mosquito netting was from someone else (I do not recall who....) What I found attractive was being able to put it up without a lot of fabrication or alteration, just pound in posts at the corners and tie up the netting. It should be able to accommodate 4 or 5 fully grown brussel sprout plants, which would equal pretty much my annual eating tolerance for this particular crucifer!