Selkirk L.L.C. has added Williston-Allen Associates as its new manufacturers representative for the six New England states. The contacts are: Jerry Williston in North Kingstown, R.I., phone: 401-374-4365; Steve Williston in Tolland, Conn., phone: 860-872-3711; Ed Allen in Mansfield, Mass., phone: 508-339-3348; and Cathie Jeffrey in Centredale, R.I., phone: 401-232-7800. Selkirk offers Metalbestos and AirMate product lines.