Home / Garage Door Springs / Catnic / Westland Engineers Door Springs Catnic MK3C Spring and Pulley Assembly £48.17 each Catnic MK3C spring and pulley assembly supplied with pulley on one end to suit Catnic garage doors. If your existing spring box does not have a plastic cover replacement of the cable or springs is not recommended. Please see the "Catnic spring box" Please select the garage door width, height and style from the drop down boxes below. It is recommended that the cables be changed when replacing a spring. Please choose the size and style of your door.: Please indicate door style Horizon or horizontally ribbed Carlton or vertically ribbed Chevron or diagonal lines Georgian or squared design Sailsbury or top part glazed bottom ribbed Parade or squared design plastic coated For help identifying your door style please see the pictures above Door frame opening width. 6'6" or 1980mm 7'0" or 2135mm 7'3" or 2220mm 7'5" or 2260mm 7'6" or 2286mm 7'8" or 2348mm 8'0" or 2440mm 8'2" or 2500mm 14'0" or 4270mm Please note that the door could be up to 1" 25mm smaller than the frame opening width. Floor to underside of head beam height 6'3" or 1905mm 6'4" or 1930mm 6'6" or 1980mm 7'0" or 2135mm Please note the door could be up to 1" or 25mm smaller than the opening height Customers who bought this also bought: Catnic / Westland Engineers Mk3c / Mk2c Cables More Details Catnic / Westalnd Engineers Nylon Guide Rollers More Details Garage Door Lubricant More Details Privacy Policy	Kingsley Garage Doors 11 Langthorne Ave Stevenage, Herts. SG1 3ND UK (Administration only) Tel. 0800 279 0725