Inlet pass-through filter, part no. 650243 | gastroparts.com
Amazon.com: 1pcs BP400-550nm pass through the band-pass filter, blue light green light filter, pass through filter, T ? 80% coated OD2 (circular ?24.5×1.1mm) : Industrial & Scientific
General-Use HEPA Filtered Pass-Throughs
Filter Specifications (Digital Filter Design Toolkit) - NI