Is this product aged deterioration? It may be impossible to open and close in a few years, for its replacement. Is it a bit weak? It's staple and this is the only choice because it's only this, but it's a design that is too shabby. I also want color development. Also, it is exaggerated that the insulation on the back side is written. Actually, there are packings of only a few millimeters of sponge, but are you talking about this? I have to tell you about an airtight packing. Airtightness is reasonable, and heat insulation performance is low. Even if it is higher, I buy goods that really contain insulation if there is one.
Exchange from old registers accompanying renovation
On 2015-01-13 12:44:34
It is a standard product, and the reliability is fixed. It can be opened and closed by pushing either the upper or lower panel, it seems that sound insulation and air tightness are good and insulation is done to some extent. Since it is a standard item, there is no need to worry about replacement.