Pins are supplied as standard with all Mk4 springs.
Available in serveral strengths – please see identification chart below.
| MK4 Spring Identification Cart | ||||||||
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| Door Sizes (mm) |
Door Sizes (inches) |
Georgian | Beaumont/ Cathedral |
Carlton | Salisbury | Horizon | Chevron | Parade |
| 1984 x 1905 | 6’6″ x 6’3″ | – | – | 1 | – | 1 | – | – |
| 1984 x 1981 | 6’6″ x 6’6″ | 2 | – | 1 | – | 1 | 1 | – |
| 1984 x 2136 | 6’6″ x 7’0″ | 4 | – | 2 | – | 2 | 2 | – |
| 2134 x 1905 | 7’0″ x 6’3″ | – | – | 1 | – | 1 | – | – |
| 2134 x 1981 | 7’0″ x 6’6″ | 4 | 2 | 1 | 4 | 1 | 1 | 2 |
| 2134 x 2136 | 7’0″ x 7’0″ | 7 | 5 | 4 | 5 | 2 | 2 | 4 |
| 2224 x 1931 | 7’3½” x 6’4″ | – | – | 1 | – | 1 | – | – |
| 2259 x 1905 | 7’5″ x 6’3″ | – | – | 2 | – | 1 | – | – |
| 2259 x 1981 | 7’5″ x 6’6″ | 4 | 4 | 2 | 5 | 1 | 2 | 5 |
| 2259 x 2136 | 7’5″ x 7’0″ | 7 | 5 | 4 | 7 | 4 | 4 | 4 |
| 2284 x 1981 | 7’6″ x 6’6″ | 4 | 5 | 2 | 5 | 4 | 2 | 4 |
| 2284 x 2136 | 7’6 x 7’0″ | 7 | 7 | 5 | 7 | 4 | 4 | 5 |
| 2349 x 1905 | 7’8½” x 6’3″ | – | – | 2 | – | 2 | – | – |
| 2349 x 2000 | 7’18½” x 6’6¾” | 5 | 5 | 2 | – | 2 | 4 | – |
| 2349 x 2127 | 7’8½” x 6’11¾” | 7 | 5 | 5 | – | 5 | 5 | – |
| 2439 x 1905 | 8’0 x 6’3″ | – | – | 4 | – | 2 | – | – |
| 2439 x 1981 | 8’0″ x 6’6″ | 5 | 5 | 4 | 7 | 2 | – | 4 |
| 2439 x 2136 | 8’0″ x 7’0″ | 7 | 7 | 5 | 7 | 5 | – | 5 |
| 2501 x 1905 | 8’2½” x 6’3″ | – | – | 4 | – | 2 | – | – |
| 2501 x 2000 | 8’2½” x 6’6¾” | – | – | 4 | – | 2 | – | 5 |
| 2501 x 2127 | 8’2½” x 6’11¾” | – | – | 5 | – | 5 | – | 7 |
