Radiators are sometimes installed inside or in front of baseboards (baseboard radiators). Crossflow radiators and coolant reservoirs prevented overheating. Thermal control is maintained through the use of radiators, multi-layer insulation, and actively controlled heaters. Crossflow radiators and coolant reservoirs that prevented air from entering the system prevented overheating. Small automatic valves are available to fit individual radiators. This air has to be vented using screw valves built into the radiators. Heat is produced by hot water radiators and centrifugal fans. Additionally, it is lighter despite having additional radiators and coolant. Temperature control was maintained through thermal insulation and a system of radiators. The engine featured dry sump lubrication as its racing counterpart and bigger radiators. The wings were redesigned and the rear bodywork reprofiled around larger radiators. Local content was about 40% and included glass, wiring, batteries, radiators, carpet and interior trim. The barrel radiators were made of ribbed cast aluminum. This was essential to allow heat rejection from "Columbia"'s systems via the doors' space radiators. Passive thermal radiators cool the WMAP to ca.