Interior prehang
Flat jamb pairs, split-jamb options, headers, stops, and tall-opening sizes.
Paint-grade · 6/8 + 8/0
Opening components · sourced from SBP
Jamb depth, wall build-up, handing, weather seal, sill, and slab all have to agree. Start with the opening—not a mislabeled pile of parts.
Start with the application
Flat jamb pairs, split-jamb options, headers, stops, and tall-opening sizes.
Paint-grade · 6/8 + 8/0
Kerfed frames, weatherstrip, rot-resistant bottoms, sill pans, and complete sets.
Primed · stain-grade · composite
Pocket frames and finished jamb kits matched to slab thickness, wall depth, and opening.
2×4 + 2×6 walls
Replacement heads, legs, sill decks, extenders, frame stock, and water-management parts.
Component-level ordering
Core stock matrix
24 shown
SBP ProductsJ458FJP
Confirm availabilityPaint-grade flat jamb legs for a standard 6/8 interior prehang.
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SBP ProductsF68514FJK
Confirm availabilityDeeper paint-grade jamb with a kerf ready for seal or weatherstrip.
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SBP ProductsF68658FJ
Confirm availabilityWide flat jamb for deeper wall assemblies; no weatherstrip kerf.
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SBP ProductsF80658FJ
Confirm availabilityEight-foot flat jamb for tall openings and 2×6 wall conditions.
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SBP ProductsF68658FJKWS
Confirm availabilityPrimed exterior frame legs with compression weatherstrip included.
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SBP ProductsF80658FJKWS
Confirm availabilityTall primed frame legs, kerfed and supplied with weatherstrip.
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SBP ProductsF68678FJKWS
Confirm availabilityExtra-deep exterior frame with installed weatherstrip for masonry or thick-wall details.
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SBP ProductsF80678FJKWS
Confirm availabilityEight-foot, 6-7/8 inch primed frame legs with compression weatherstrip.
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SBP ProductsF30458FJPWSSET
Confirm availabilityComplete 3/0 paint-grade frame set with kerf and weatherstrip.
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SBP ProductsFL458FJPWSSET
Confirm availabilityStandard-depth exterior frame kit for a 6/8 door opening.
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SBP ProductsF70458KA
Confirm availabilityStain-grade exterior frame legs for a 7/0 entry door.
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EnduraFS1X4FJ7P
Confirm availabilityPrimed finger-joint frame stock with a rot-resistant composite bottom.
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SBP ProductsFS612
Confirm availabilitySolid frame material sold by the linear foot for custom openings and repairs.
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SILLCOVER
Confirm availabilityReplacement deck cover for an Endura Z-Series inswing threshold.
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VERSAPAN4916PKG
Confirm availabilityField-trimmable pan flashing system for exterior door installation.
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OS73ADA
Confirm availabilityLow-profile thermally broken outswing sill for accessible openings.
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MVISTA90
Confirm availabilitySill system for multi-panel folding door assemblies; configured by opening.
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CSJK4SW308013449
Confirm availabilityComplete split-jamb finishing kit for a 3/0 × 8/0 pocket-door opening.
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CSJK4SW308013849
Confirm availabilityPoplar split-jamb finishing kit sized for a 1-3/8 inch slab.
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MVISTAFRMKIT
Confirm availabilityAssembly hardware package for MiraVista folding-door frames.
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SBP ProductsPH30
Confirm availabilityPrimed 3/0 head piece with compression weatherstrip installed.
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SBP ProductsJ458KA30
Confirm availabilityStain-grade 3/0 header for knotty-alder exterior frame assemblies.
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8541FJ8P
Confirm availabilityBarcoded paint-grade stop for interior jamb and prehang assemblies.
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Worldwide Door ComponentsWPC0106FXT
Confirm availabilityFully composite frame material for wet zones, coastal exposure, and high-abuse entries.
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Opening anatomy
We match the frame to the wall, the slab, and the exposure. That means fewer field shims, fewer callbacks, and no guessing which “jamb” a schedule meant.
No-rot composite system
Rot-resistant bottomJamb depth guide
Drywall, tile, wainscot, and masonry returns change the number. If the wall build-up varies, send the schedule and a field photo.
| Jamb depth | Typical wall | Best use |
|---|---|---|
| 4-5/8 in | 2×4 framing + 1/2 in drywall each side | Standard interior and exterior openings |
| 5-1/4 in | 2×4 framing with thicker finish build-up | Tile, paneling, or uneven renovation walls |
| 6-5/8 in | 2×6 framing + 1/2 in drywall each side | Deep-wall residential construction |
| 6-7/8 in | 2×6 framing with added finish thickness | Masonry returns and special wall assemblies |
Let’s work through the details
Interior jambs, exterior frames, weatherseal, thresholds, and pocket systems—matched to wall depth, slab, handing, and exposure on one quote.