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Hammond’s 1591 family is available in five versions: 1591, 1591 economy, 1591XX, 1591XX economy and 1591T. The wide choice of sizes and features makes it one of the most versatile ranges of small rectangular plastic enclosures on the market. The 1591 and 1591XX differ in that the 1591 have multiple slots on 3.0mm spacing, moulded into all four sides of the base for vertically mounting 1.6mm PCBs; the 1591XX are smooth sided with PCB mounting bosses in the lid and base so that PCBs can be mounted horizontally. The difference between the standard and economy versions of the 1591 and the 1591XX is that the lids of the standard versions are secured by machine screws into embedded brass bushes, making them ideal for multiple opening and closing. The economy versions use self-tapping screws into plastic posts. The other main difference is that the standard versions are moulded from UL94-V0 flame retardant, the economy versions from general-purpose ABS. The 1591 and 1591 economy • 13 sizes: 84 x 56 x 26 to 190 x 111 x 61mm • Internal side walls include card guides for vertical PCB mounting • Available with plain and flanged lids and as an alternative, with a flanged base • Standard versions are moulded in 94-V0 flame retardant ABS • Economy versions are moulded in general-purpose ABS • Tongue and groove construction gives IP54 sealing • Available as standard in grey, black, beige and blue • In the standard version, the lid is secured with M3 x 10mm machine screws threaded into integral brass bushes. Perfect for applications when repetitive assembly and disassembly are required • In economy versions, the lid is secured with self-tapping screws into solid posts for cost saving when repeated access is not required • Optional adaptors fit into the vertical slots enabling PCBs to be mounted horizontally in a choice of multiple positions within the height of the enclosure The 1591XX and 1591XX economy • 12 sizes: 84 x 56 x 27 to 221 x 150 x 62mm • Plain internal side walls for horizontal PCB mounting • PCB mounting bosses moulded into the lid and base • Available with plain and flanged lids and as an alternative, with a flanged base • Standard black and grey versions are moulded in 94-V0 flame retardant ABS • Translucent blue and economy versions are moulded in general-purpose ABS • Tongue and groove construction gives IP54 sealing • Available as standard in grey, black and transparent blue • In the standard version, the lid is secured with M3 x 10mm machine screws threaded into integral brass bushes. Perfect for applications when repetitive assembly and disassembly are required • In economy versions, the lid is secured with self-tapping screws into solid posts for cost saving when repeated access is not required The 1591T     • Six sizes: 99 x 51 x 24 to 191 x 109 x 61mm • Internal side walls include card guides for vertical PCB mounting • Mounting flanges available as an accessory • Moulded in 94-V0 flame retardant polycarbonate • Tongue and groove construction gives IP54 sealing • Available as standard in ice blue, transparent to blue and white light; IR red is transparent to infra-red wavelengths and clear, which is completely transparent. • The lid is secured with M3 x 10mm machine screws threaded into integral brass bushes, perfect for applications when repetitive assembly and disassembly are required 

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