Specifications:

Message on the same side and different side of the 24th floor

Messages left on the same side and different sides on the 32nd floor

Message on the same side and different side of the 38th floor

50-layer ipsilateral manual exhaust valve

50-layer off-side manual exhaust valve

50-layer ipsilateral automatic exhaust valve

50-layer off-side automatic exhaust valve

60 layer ipsilateral manual exhaust valve

60-layer off-side manual exhaust valve

60-layer ipsilateral automatic exhaust valve

60 layer different side automatic exhaust valve

80 layer ipsilateral manual exhaust valve

80 layer off-side manual exhaust valve

80 layer ipsilateral automatic exhaust valve

80 layer different side automatic exhaust valve

100 layer ipsilateral manual exhaust valve

100 layer off-side manual exhaust valve

Automatic exhaust valve on the same side of 100 layer

100 layer off-side automatic exhaust valve

120 layer ipsilateral manual exhaust valve

120 layer off-side manual exhaust valve

Automatic exhaust valve on the same side of 120 layer

120 layer off-side automatic exhaust valve

150 layer off-side automatic exhaust valve