This adaptable box gasket from PROFIX , along side our adaptable boxes, shield your wire terminations from the elements and protects against electrical shock. The box has 20 mm knockouts that make it simple to feed large cables through, giving you more freedom while wiring. The galvanised steel design of the unit protects it from rust and corrosion, so it's a long-lasting option. The square unit is compact with dimensions of just 4” x 4” x 2”. Its flanged covers fit securely into place with mushroom head screws, keeping dust out of the electrical components inside the box.