square diffuser for sale, brand-new and used.

You're bidding on one United Detector Technology ( UDT ) Photoptic Filter with UDT 1223-1 Detector / Sensor in Cylindrical Mount. These are used. You'll receive one (1) UDT 1223-1 Filter / Detector Assembly with your winning bid.

This listing is for one International Light SEL033 Broadband Silicone Detector. It has a 33mm-square sensing area. Its range is 200nm to 1100nm with a 950nm sensitivity peak.

This uniquely designed, handmade acoustic panel is perfect for those applications where Sound Absorption is needed while also keeping some of that "live" feel to any space. Though designed especially for Recording Studios this Absorber/Diffuser is also great for Office spaces, Churches, Home Theaters, and more. A great piece for any environment, this Acoustic Sound Absorber/Diffuser panel is great for not only controlling unruly sound waves but also adding a visually pleasing wall decor.