For applications in which full spectrum infrared (i.e., heat) and/or UV radiation are an issue, SP713 filters provide extended hot mirror blocking throughout the UV and the near-IR out to 1300nm at a reasonable cost. The substrate is polished B270 crown glass and it comes in 0.5, 1mm, and 2mm thicknesses. Surface quality is better than 10-5 and custom unmounted sizes can be provided.