EPDM seal is widely used

According, to identify quality wooden doors, the first tap, weigh approaches are generally divided into the gate of the solid filler and some solid, solid filler certain weight, the price also expensive, and some solid relatively light, the price relatively cheap. But there are some sinister business of some scraps as filler to increase the weight, so as a consumer, or to develop the habit of buying branded products. Security seals
The second way is to observe recognition "seal." "Seal" is directly related to the density of the door. Seal of "hiding" in the door pocket and door contact part, feels relatively soft. Formal enterprises will add seals, thus avoiding the seam after closing there is always a problem.
The third is the Door of the material. Reporters learned that most of the complaints were mainly about the doors Door out of the question. Essence of the problem is that the businesses will not necessarily use the same door pocket and door material, solid wood doors with solid wood Door does not mean that it will. If you do a solid wood door with MDF Door, because it does not contain wood fibers, water prone to foaming, can cause deformation of the door frame, so the best time of purchase ask whether the merchant Door and door of a material. numbered seals