Oxford Hardware CC533 Jacketed IR Quartz Heat Bulb, 300W, 118mm Length

Euroffice

118(L) x 20(Ø)mm. Push-in fitting makes the bulb easy to fit. 118mm width helps to maximise heat coverage. Jacketed design won't shatter if accidentally broken. Ideal for keeping food warm after cooking. R7 fitting.

Zoro Tools

Low pressure quartz lamps, jacketed version greatly increases safety in food outlets by helping to prevent glass falling into food.

Amazon

300 W jacketed lamp Push in R7 fitting Package Dimensions: 2.0 L x 17.0 H x 4.0 W (cm)