I designed this grill to be stealthily quiet and if installed on the intake side of the fan in the proper direction this grill is the quietest grill I make. this can be done in any color acrylic but shown is the transparent frosted . also I can make this and any grill in any size whether it is 40mm 80mm 92mm 120mm 140mm or 200mm I can create it for you.
 
note in the picture therre are 2 120mm fans shown but this is just for one grill,  the fans and rad are not included.