Garbage Chute System - For Waste Collection In Buildings And Towers MATERIAL THICKNESS 1.2mm (18 Gauge) 1.5mm (16 Gauge) 2.0mm (14 Gauge) 3.0mm (11 Gauge) (when specified). MATERIAL CHOICE STAINLESS STEEL 304 STAINLESS STEEL 316 GALVANIZED IRON�  CHUTE SIZES 18=450mm 20=500mm 24=600mm 28=700mm 30=750mm 36=900mm INTAKE DOOR SIZES 12"*15"(305mm*381mm)  15"*18"(381mm*457mm)  18"*18"(457mm*457mm)  21"*18"(533mm*457mm) 24"*24"(610mm*610mm) COMPONENT:- FIRE SPRINKLER CHUTE VENT, VENT CAP AND BIRDS AND INSECT SCREEN FIRE DISCHARGE DOORS ELBOW AT GROUND FLOOR FOR IMPACT SOUND DAMPENING COATING FOR NOISE REDUCTION OPTIONAL DOORS WITH ELECTRICAL INTERLOCKING MECHANISM� �  DOORS WITH FINGERPRINT, S-CARD, PASSWORD MASTER CONTROL PANEL WITH INDIVIDUAL FLOOR MONITORING SYSTEM DISINFECTANT AND SANITIZING UNIT ISOLATOR PADS SMOKE DETECTORS FOR GARBAGE ROOM ODOUR CONTROL UNIT USER WARNING SYSTEMS EXHAUST FAN�  AUTOMATIC BRUSH MACHINE HYDRAULIC COMPACTOR BISORTER/TRISORTERS�  ROCKWOOL INSULATION AND CHUTE WRAPPING RUBBER BAFFLES FOR INTAKE