Kinetic Systems Inc. has developed a line of tabletop enclosures for optical tables that enable environmental isolation. Designed to be sturdy and economical, they are constructed with an aluminum framework, acrylic sides that slide open and a composite roof. Available in four colors, they range in size from 48 x 72 x 32 in. to 60 x 144 x 32 in. An optional fan with a high-efficiency particulate absorbing filter is offered.