CSL Lighting DX 3.6 Series 1LT New Construction Non-IC Rated New Construction Housing features an integral Magnetic Transformer that is dimmable using a quality Magnetic Low Voltage Dimmer. This needs at least 3-Inch spacing away from insulation. DX is 5.875-Inch high by 5.5-Inch wide, with an aperture of 3.5-Inch and a ceiling cutout of 3.625-Inch. The arms extend from 12.75-Inch to 24-Inch. DX comes one per package, and requires up to one 50-Watt 12-Volt MR16 halogen bulb (not included). CSL continues to lead the industry by offering amazing performance and design value in concealed linear lighting for Coves, Soffits and Under cabinet lighting. CSL"s Invizilite, Mach 120, and Counter Attack series offers what may be the largest collection of halogen, xenon or fluorescent under-cabinet fixtures. Metal finishes including stainless steel, bronze and white are offered. Various cabling and switch options are available. CSL also offers highly decorative pendants and wall surface systems. Using a mixture of hand-made Italian glass, precision machined metals and other premium components, CSL offers a large assortment of contemporary clean-line suspension pendants, wall mounts and ceiling fixtures. Many are available in fluorescent, halogen and incandescent versions, as well as LED. CSL designs and manufactures performance-engineered architectural lighting fixtures, with teams in Europe, U.S., and Asia. CSL incorporates the latest lamping and electronic technologies into our fixtures to offer precision-engineered, highly-functional, energy-efficient and beautiful lighting.