Incandescent Lamp Shapes
Incandescent lamps come in various shapes and sizes, all designated by a letter or letters followed by a number. The letter is to identify the lamp’s shape while the numerical designation is to identify the diameter of the lamp in an eighth of an inch. For instance, a G-30 lamp is a globe shape lamp with 3-3/4″ in diameter (30 รท 8 = 3-3/4). The most common shape for incandescent lamps and the one everyone knows is the A shape (A-19) – The A is only an arbitrary designation. Norburn Lighting – Vancouver’s Lighting Store since 1969. For Service Selection and Price.
| BR | = | Bulged Reflector |
| F | = | Flame |
| G | = | Globe |
| PAR | = | Parabolic Aluminium Reflector |
| PS | = | Pear, Straight Neck |
| R | = | Reflector |
| T | = | Tubular |
Lamp Shapes
