Renold Jeffrey engineered proofer and oven chains, available from its Master Value Added Reseller The Henry Group, can be used in many existing tray ovens and proofers. The Henry Group is a leading provider of oven services, including rebuilds, OSHA and mechanical inspections, parts manufacturing, and oven upgrades, both electrical and mechanical. Through its specific industry knowledge in this area, it can offer Renold Jeffrey chains directly to bakeries. (800) 356-7591