Square KLLni with 4-pin plug-in base GR10q for operation with electronic ballast/conventional ballast. Product features: Short and compact plug-in base lamp with 2-tube technology. Single-sided 4-pin plug-in base GR10q. Color rendering index Ra: 80. Product advantages: Square shape enables even light distribution. No shadows at either end and no dark spots. Very economical. Extremely flat design. Good light quality. Long service life. Areas of application: Flat wall and ceiling lights. Public buildings, receptions, offices, corridors, etc. Shops. Supermarkets and department stores. Hotels, restaurants. Technical equipment: Suitable for operation with electronic and conventional ballasts.