Created with Eselt - eBay Listing Template Editor eBay.co.uk Give us a call Send us a message Created with Eselt - eBay Listing Template Editor - Our Store - Seller Profile - Feedback - About us - Contact Created with Eselt - eBay Listing Template Editor CROMAR C3 External Fillet Corner Universal Fibreglass Roofing GRP C3EXT DESCRIPTION: The GRP (Glass Reinforced Polyester) external fillet corner trim has been manufactured from durable fibre glass, and is a hot-pressed, pre-formed external corner, formulated to eliminate the necessity to mitre corners of D260 fillet trim. Additionally, it is extremely lightweight but durable and weather resistant. Benefits Fire resistant UV resistant Weatherproof Resists heavy foot traffic Ideal for.