Different Light Bulb Base Sizes

A19 a15 a21 br bulged reflector spotlight and floodlight bulbs.

Different light bulb base sizes. 1 888 455 2800 fax 1 508 363 2900. There are hundreds of unique bases for light bulbs. You can find this base on bulbs such as the t6 s11 and r12 but you will have to do a lot of searching to find these bulbs. Bayonet medium by22d index double contact bayonet wedge bases.

The size of a bulb base is determined by measuring the width of the base in millimeters at its widest point. The most familiar is the edison screw base found on most incandescent bulbs and many halogen compact fluorescent hid and now led bulbs. The industry uses many terms for the same size. Types of light bulbs bases most a shaped lamps have a screw base e12 e17 or e26.

E obviously is for edison. Shop by screw base with our universal bulb finder e26 e27 medium edison 26 mm or 27 mm diameter. The following is a list of common basic types presented on a size lamps. On our website we refer to our bulbs and string lights as c7 c9 and medium.

However because the light industry likes mysterious codes you may also see e26 e12 e39 etc. There are many light bulb base sizes available. Bi pin bases 4mm g4 4mm gu4 4mm gz4 5 3mm g5 3 5mm g5 5 3mm gu5 3 5 3mm gx5 3 5 3mm gy5 3 6 35mm g6 35 6 35mm gy6 35 6 35mm gz6 35 8mm gy8 8 5mm g8 5 9mm g9 9mm g9 pin blade 9 5mm g9 5 9 5mm gx9 5 9 5mm gz9 5 12mm g12 bayonet bases miniature bayonet double contact bayonet ba15d single contact bayonet ba15s d. For example a lamp with a medium base or e26 measures 26 millimeters 1 02 inches at its widest point on the base.

The common terms are medium intermediate candelabra and mogul. Decoding edison bulb base types. Therefore a light bulb described as a gu 10 base will feature a 10 millimeter wide base. This light bulb base is not very common and most often found on much smaller bulbs.