My current model project is a freelance houseboat based on a converted Thames lighter. Although I have previously made my own window frames from Plasticard, I decided with this model to take the easy route and buy (if I could) some pre-made window frames as this model needs two dozen +. I noted that Mac's Mouldings sell sets of frames for lifeboats so I contacted the proprietor Martin to ascertain the actual sizes. Bingo…Martin will sell frames on a pick `n' mix basis and provided me with a photo copy of each set. The images are actual size and from two different lifeboat sets was able to obtain frames to suit my requirements. Unfortunately two frames suffered transit damage but Martin replaced these within a couple of days…………….Very good service.