MDF S4S

We stock a range of MDF S4S boards—surfaced four sides—for use in a variety of trim and finish carpentry applications. Made from medium-density fiberboard (MDF), these boards provide a smooth, uniform surface that’s ideal for painting and easy to work with on-site.

MDF S4S is a versatile option for both residential and commercial projects. Common uses include casing, jamb extensions, shelving, or as a clean, modern baseboard alternative. The consistent density of MDF ensures sharp edges, minimal waste, and a professional finish.

Browse our available MDF S4S profiles below to request a quote or contact us to learn more about our full range of trim options.

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MDF S4S 1 x 4

MDF S4S 1 x 4

Starting at

$11.54

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MDF S4S 1 x 6

MDF S4S 1 x 6

Starting at

$18.66

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MDF S4S 1 x 8

MDF S4S 1 x 8

Starting at

$30.53

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MDF S4S 1 x 10

MDF S4S 1 x 10

Starting at

$33.80

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MDF S4S 1 x 12

MDF S4S 1 x 12

Starting at

$47.62

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MDF S4S 5/4 x 4

MDF S4S 5/4 x 4

Starting at

$38.09

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MDF S4S 5/4 x 6

MDF S4S 5/4 x 6

Starting at

$29.74

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MDF S4S 5/4 x 8

MDF S4S 5/4 x 8

Starting at

$42.26

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