【Size】: Diameter 28mm/1.1in, aperture: 5mm/0.19in, suitable for most insulation boards on the market. 【Material】:These board washers are made of high-quality metal, sturdy, corrosion, and easy to use. 【Function】: These fixing washers fix the support plate on the floor or wall, they are an essential component for installing the tile back plate. 【Application】: Used for fixing insulation board, ceramic tile support board, gypsum board, insulation board, etc. 【Durable】: These butterfly-shaped washers are not easily deformed. The perforation of the fixing disk allows the adhesive or plaster to stick to the board’s surface, as well as minimizing the risk of surface delamination or damage.
Product specifications
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