... head for easy storage 1) Item/model: HT/R 201, HT/R 301, HT/R 401, HT/R 401+ 2) Aperture: 285mmx285mm 3) ... 5) Lamp/life span: a) HT/R 201, HT/R 301: EHJ 24V 250W/50hb) HT/R 401, HT/R 401+: EVD 36V 400W ... Illumination (central lumen):a) HT/R 201: 3000+b) HT/R 301: 2800+c) HT/R 401: 3800+d) HT/R 401+: 4000+ 8 ... 20) Net weight: a) HT/R 201: 8.5kgb) HT/R 301: 9.0kgc) HT/R 401:9.7kgd) HT/R 401+: 9.5kg21 ...