Lamp Clamp; 4″ size. deeper than RL04. Heat reflection lampshade is made of 0.8mm thickness high quality aluminium products by spinning and double sided stoving varnish. Its structure may reflect heat source gathered force and streghten heat energy output. Various specifications may meet diffrent sizes of bulbs. suitabe to 50cm terrariums and below. specially designed for 25-26W UVB energy saving lamp.