What is a fitter for a lamp?
The first thing you must consider when replacing a glass lampshade is the proper “fitter” size of the shade holder on your lamp or fixture. The shade holder is the part (usually metal) that holds the shade to the lamp or fixture (see “before” picture below).
If your lamp has a harp, you will need a shade with a spider fitter. The spider fitter sits on top of the harp, is secured by a finial, and is integrated in the lampshade. The UNO fitter is built into the lampshade. The Slip type sits on the socket and is held in place by the bulb.
- The height of a table lamp shade should be approximately the height of the base (to bottom of socket) x 60% up to 70%. The height of a floor lamp shade should be approximately the height of the base x 30% to 40%.
- The lower the Kelvin number (between 2700K to 3000K), the more yellow the light. Higher Kelvin numbers, say 5500K to 6500K, emit a bluer light. For a white light, look for bulbs marked 3500K to 4100K.
- Floor lamps, measured from bottom of base, to top of finial, if they have one, are usually 58 to 64 inches high. When paring an end table, with a table lamp, the combined height of the two should also be 58 to 64 inches high. (The same height of the floor lamp).
A lamp harp is the component of a lamp to which the lamp shade is attached. It typically comes in two separate parts, a saddle which is fastened under the lamp socket, and the harp itself which consist of a lightweight frame attached to the saddle at its lower end and extending upwards to a point above the bulb.
- Lamps and light fixtures. Some lampshades or light fittings, especially in glass, typically terminate in a finial which also serves to affix the shade to the lamp or fixture. Finials are twisted onto the lamp harp. Typically the finial is externally decorative whilst hiding an internal screw thread.
- No you don't need one IF you have a foundation for the mattress to lay on, a thick sheet of plywood would do, since that is basically what a box spring us though you bed will lie 4-6 inches lower if you only have a 4 inch typical mattress. So, if you want to buy a firmer mattress, just remove the box spring instead.
- Size. Bed slats should be a minimum of 3/4 inches thick to provide enough support for the body weight on the bed. Anything less is likely to break under the weight of the body. If you need additional support, you can use wood up to 3 1/2 inches thick.
So for a 6-inch lamp base, the shade should be at least 12 inches wide. And if the total height of the lamp (including the bulb and harp) is 24 inches, the shade should be 8 inches tall.
- For table lamps, the height should be approximately 60% and 80% of the height of the lamp base. For example, a table lamp base that's 20 inches high should have a lampshade between 12 and 16 inches in height.
- Lamp Height – A good rule of thumb is to find a table lamp that is approximately 30″ tall from the bottom of the base to the top of the shade/finial. Without getting too mathematical, the top of the lamp should be between 58″ and 64″ from the ground. Measure the height of your table and plan accordingly.
- Side tables typically are 25 to 30 inches tall, and the seat of a sofa usually is about 19 inches from the floor --so consider these measurements when choosing your lamp. Measured from the floor, the top of the lamp should be within 58 to 64 inches.
Updated: 21st November 2019