How well do these work with a 17x13' room converted into a garage gym to remove an echo and lower the noise of a deadlift onto a wood platform?

I found this lowered the noise minimal.

if i fill the full ceiling with these will they absorb sound from upstairs neighbors and also block my sound from going up?

They not absorb sound from upstairs neighbors But block your sound from going up Their function is MUFFLING,SOUND ABSORPTION AND NOTSE REDUCTION Absorbs sounds with frequencies as low as 200HZ and above by transmitting back and forth inside the sonic sponge to reduce the interference and reverberation of the reflected sound in the room and improve the purity of the sound

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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KAISHEGNWEIAcoustic Foam Egg Crate Panel Studio Foam Wall Panel 48" X 24" X 2" (4 PACK, Black)

Product ID: 400410570

€ 186.37

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Sold byAmazon NetherlandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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KAISHEGNWEIAcoustic Foam Egg Crate Panel Studio Foam Wall Panel 48" X 24" X 2" (4 PACK, Black)

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