send word from designer:
According to the feedback from customers,
including the effect of soundproof is not
satisfactory when the floor is not flat and
resistance becomes tough after installation,
keeping fun design a kind of sealing strip
with three shutters of difference length so that
the sealing area becomes larger and the
ability of soundproof has been improved.
Please forget other sealing strips.
Multi-function seal:
The reason why temperature decline slowly when turning
on the air conditioner at summer, is due to crack of doors,
and sealing strip counld prevent the lost
of hot air. Moreover, it can prevent coming in from door
crack of both cold air at winter and wind when it's rainy.
Besides , it can prevent accumulation of dust.
