under the order

D65 lens protection extension Degree of protection IP67 for MV440 and MV540 devices; Enclosure: metal, contains: extender and O-ring Inside diameter: 57 mm max. Extension by: 33mm suitable Protective lens barrels 6GF3440-8AC11,-8AC12,-8AC21 a. 6GF3540-8AC11; Suitable lenses (MLFB): 6GF9001-1xx01 and 6GF3540-8EA0x-0LL0; Suitable luminaires (MLFB): 6GF3400-0LT01-7BA1, -8DA1 WxHxD (mm) 65x 65x 48

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