An air filter design company offers a complimentary, round-the-clock prototype service to design engineers worldwide at its Web site. To receive a prototype, submit a request on the Internet or by telephone, fax, or e-mail. After the prototype is submitted, it is produced and shipped within five working days. Air filters meet the following standards and classifications: UL 94 HF-1, UL 900 Class 2, CE, Telcordia NEBS GR-78-CORE and GR-63-CORE, and RoHS Compliance. When used as part of a fire enclosure, they also may be configured to comply with the flame-drip requirements described in UL 60950 and EN 60950.

Universal Air Filter Co., 1624 Sauget Industrial Pkwy, Sauget, IL 62206, (800) 541-3478, www.info.hotims.com/18361-282