SlateGuard is the only polycarbonate snow guard for slate roofs. The strap is constructed from heavy 16 gauge 304 stainless steel and is easily hooked into the nail or under the existing slate shingle. The stainless and polycarbonate construction is guaranteed to last a lifetime and is virtually invisible when installed. The clear SlateGuard is usually in stock but larger quantities on hand may sometime be limited. Larger orders and colors usually require approximately 3 -4 weeks for delivery. Please call for availability.