Sun Mountain Blog

High Quality MDF Interior Doors

3-panel MDF Double Doors

Sun Mountain is the premier manufacturer of custom wood doors in the U.S. But did you know that in mid-2020, Sun Mountain introduced a line of high quality interior MDF doors?

Our MDF doors are true stile and rail construction, engineered to resist bowing and warping. We use 1/8″ thick High Density Fiberboard (HDF) veneers, superior quality Timberstrand® Laminated Strand Lumber (LSL) core material, and solid Poplar edge caps for hinge mounting. Panels are 3/4″ thick solid MDF.

Cutaway View of MDF Door Construction

Illustration of MDF Door Construction

Sun Mountain’s MDF doors are available in one, two, and three-panel contemporary designs, with square sticking and flat panels, in standard heights and widths. Solid Poplar jambs, with square corner ball-bearing hinges, are also available. Our MDF doors are pre-primed in the factory at no additional charge, ready for onsite painting.

MDF Door Designs

3-panel MDF Interior Door

Sun Mountain sells direct to the trade, with favorable pricing compared with leading MDF suppliers like TruStile and Supa. All Sun Mountain products are made in the USA at our northern Colorado factory and shipped nationally direct to the jobsite.