John Adams Ltd is an approved supplier of Whiting and Dover wide slated Doors for both dry freight and insulated Vehicles. A full range of spares are available ex-stock for both doors. We supply custom made Alloy roller shutter doors from Vanguard Roller Shutters within 7 days of order. A large stock of Dry freight door blank panels can be found at both our Glasgow and Huddersfield Depots in a combination of finishes.