Thetford Replacement Cooker I-Drive Knob Black & Silver View cart “Truma Water Heater Part – Ultrastore/Ultraflow Cowl Cover (2 Lug Top)” has been added to your cart. $25.00 For spinflo ovens, knob is approx 33mm diameter on top, 40mm at base. Thetford Replacement Cooker I-Drive Knob Black & Silver quantity — OR — Add to cart Categories: PARTS, STOVES-OVENS-GRILLS Description Description For spinflo ovens, knob is approx 33mm diameter on top, 40mm at base. Related products M5 Anti Vibration Rubber Mounts 15x15mm Shock Damper For Water Pump $28.50 Add to cart Hartal Evoline outer door lock handle for Swift caravans-Right Side $260.00 Add to cart Truma Water Heater Part – Ultrastore/B14 Cowl Grill Cover (1 Lug Top) $140.00 Add to cart Sale! Whale AquaSmart Disposable Filter $35.00 Original price was: $35.00.$29.50Current price is: $29.50. Add to cart