These are 300x150mm bent in half with a 25mm lip.
eBay
Universal Outdoor Aluminum External Right Angle 90 Degree CCTV Camera Stand Corner Wall Mount Bracket for Surveillance Camera
Aliexpress UK
3x Lead flashing Internal corners 90°. Code 4 thickness. Pre oiled. 150mm x 150mm x 150mm (inc 25mm bend)
eBay
This will be made from code 4 lead as British standard and will be coated in pagination oil to provide weather resistance and ensure longevity of the product.
eBay
Flashing for weatherproofing where a flat roof meets the abutment 150mm flashing 25mm dressed to go into the wall Length 300mm
eBay
The Corner lead flashing left and right hand a pair,a crucial component for both internal and external corners, providing a water-resistant solution to protect your roof. Made from durable lead material in a sleek grey colour, this flashing is designed to seamlessly integrate with your roofing system while effectively shedding water away. Easy to install and maintenance-free, this product is a reliable choice for any DIY home improvement project involving roofing and tiles.
eBay
Lead is a natural product which, when exposed to the air, can discolour due to oxidisation. Made from Code 4 sheet lead milled to British Standard BS EN 12588.
eBay
Pair of Lead flashing corners 90°. 1x Internal & 1x external Code 4 thickness. Pre oiled. 240mm x 150mm (inc 25mm bend) Contact us if you have custom size requests.
eBay
These are 300x150mm bent in half with a 25mm lip.
eBay