Whatever you use "DO NOT USE CD WALLETS" always use either DVD or Bluray cases or even Fat Jewel cases of thin ones if you prefer.
CD Wallets leave the Game or DVD/CD/Bluray unprotected and can even damage them with excessive use never buy the CD wallets. You actually better off leaving the CD Exposed rather then inside one of them wallets from my experience.
guess ill take everything out of my cd wallets....
Those dimensions seem extremely close to my measurement of my NES box of Jaws
. Which measured 5 1/8'' x 7 1/8'' x about 9/10'' So a tad small for your box with a standard NES protector but I found this oversized plastic for NES boxes that leaves about half an inch of wiggle. This might fit yours perfectly
. Not sure but it's worth a shot. Hope you find a protector that works soon
http://www.videogameboxprotectors.com/store/4569532134It's called the "legacy" size and is slightly wider and taller than a standard NES protector. Only .80 cents per unit too. not sure about shipping.
Also, oldgamerz is spot on about CD wallets. They are really bad. CD wallets are so abrasive and essentially leave micro scratches everytime you remove them from the wallet. I have never gotten a good condition game once it was stored for long periods in the disc wallets. And like oldgamerz said they get sticky in there for some reason even if you store them nice. I highly reccommend the jewel cases. They are affordable at staples or walmart. Especially if you plan on storing collectible, or beloved games in them. They work much nicer.