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TTB-400H Overhead Projector
--Stage: 285×285mm
--Lamp: 36V400W halogen lamp
--Average illumination 2400 lumens
--Central illumination 3350 lumens
--275mm-320mm Vari-focal 3-element fringing
--Detachable post
--Pullout working stage
TTB-400Hc Overhead Projector
--Stage: 285×285mm
--Lamp: 36V400W halogen lamp
--Average illumination 2400 lumens
--Central illumination 3350 lumens
--275mm-320mm Vari-focal 3-element fringing lens
--Detachable post
--Pullout working stage
--Quick lamp changer
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