| 摘要 |
An auxiliary rail for sound insulation, rainwater permeation and insect penetration of windows and doors is provided to have excellent soundproof and thermal insulation effects, and to prevent the pollution or damage of an indoor wall by restraining the inflow of wind, rainwater, insects, etc. to the maximum. An auxiliary rail for sound insulation, rainwater permeation and insect penetration of windows and doors comprises an A-type auxiliary rail(1) having a longitudinal mohair groove(2) on the outside, and a B-type auxiliary rail having longitudinal mohair grooves in two directions by spacing out rails, wherein a drain hole is perforated in the center of the B-type auxiliary rail. In case of the A-type auxiliary rail, a single rail, a double rail or a triple rail is useable. |
