Ceco Door Sound-Tech Xpress Systems and Curries 757 Quiet Noise Door Series are available with sound deadening technology that enables Sound Transmission Classification (STC) ratings from 32–55 in single flush, temperature rise, glazed, and embossed panel doors as well as flush and glazed pairs. Supplied with seals, ADA-compliant thresholds, and door bottoms, to meet STC label on door, products have been tested to ASTM E90, ASTM E1332, and ASTM E413 and carry 3 hr max fire rating.