![Not an image of a CRT with sexy scanlines, but it's a question about shadow masks. Why did almost all shadow masks have the same relative size of vertical blocks (left side)? Not an image of a CRT with sexy scanlines, but it's a question about shadow masks. Why did almost all shadow masks have the same relative size of vertical blocks (left side)?](https://preview.redd.it/dotl29p671a71.png?width=640&crop=smart&auto=webp&s=0033fd8874f551bb7a19b249f9ba7f37a2757969)
Not an image of a CRT with sexy scanlines, but it's a question about shadow masks. Why did almost all shadow masks have the same relative size of vertical blocks (left side)?
![Slot Mask vs Shadow Mask vs Aperture Grill comparisons on PC Monitors (Real Hardware+XRGB3) : r/crtgaming Slot Mask vs Shadow Mask vs Aperture Grill comparisons on PC Monitors (Real Hardware+XRGB3) : r/crtgaming](https://external-preview.redd.it/E6O92CuO7ReRlhxThHsgbM8opp34twYT20Vs86fi_04.jpg?auto=webp&s=67f0468511b9d06c61cf213bcb144cd870e73258)
Slot Mask vs Shadow Mask vs Aperture Grill comparisons on PC Monitors (Real Hardware+XRGB3) : r/crtgaming
![INDIGO | NEW WEBSITE OUT NOW! on Twitter: "I have to reiterate that the 2021 rerelease of Gleylancer lets you choose between multiple mask/grille types. I can't overstate how big this is. INDIGO | NEW WEBSITE OUT NOW! on Twitter: "I have to reiterate that the 2021 rerelease of Gleylancer lets you choose between multiple mask/grille types. I can't overstate how big this is.](https://pbs.twimg.com/media/FBxFA8KXEAIwCmB.png)
INDIGO | NEW WEBSITE OUT NOW! on Twitter: "I have to reiterate that the 2021 rerelease of Gleylancer lets you choose between multiple mask/grille types. I can't overstate how big this is.
![GORYnet on Twitter: "🔍SHADOW MASK vs APERTURE GRILL📊🔍 📺⬆️TOP: JVC TM-A130SU via S-VIDEO 📺⬇️DOWN: SONY TRINITRON PVM 1342Q via Component #sega #90s #sony #JVC #pvm #crt #retrogames #pixels #RETROGAMING #closeup #videogames https://t.co ... GORYnet on Twitter: "🔍SHADOW MASK vs APERTURE GRILL📊🔍 📺⬆️TOP: JVC TM-A130SU via S-VIDEO 📺⬇️DOWN: SONY TRINITRON PVM 1342Q via Component #sega #90s #sony #JVC #pvm #crt #retrogames #pixels #RETROGAMING #closeup #videogames https://t.co ...](https://pbs.twimg.com/media/FM2lRQPXIAYUHf3.jpg:large)