These create a sealed entrance for the cables to make their way inside, and must be carefully weatherproofed. In some cases, sealants such as GRP weathering systems may be used, enabling a cable tray to penetrate a wall without ductwork or other protective structures. The effective weatherproofing of cable trays helps to keep weather out, preventing damage to the building envelope, avoiding thermal breaks, maintaining the indoor environment and helping to keep the various cables and wires protected. maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. Dome Shaped Tray Covers These types of covers are also referred to as Hat-shaped covers.
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