Resilmount MBF
The Resilmount MBF is an adjustable Betafix furring channel clip for leveling walls and ceilings — ideal for uneven substrates, tight retrofits, and soffit transitions. It snaps hat channel into place with four leveling positions across 3/16" increments, replacing pack-out shims and ad-hoc blocking to keep tight-schedule installs clean and repeatable.
- 4 Leveling Positions: Adjustable 0–3/4" at 3/16" increments — levels uneven masonry or framing and corrects mis-aligned studs without stacking shims.
- High Pull-Strength Rating: Withstands significant vertical load — designed to work with fasteners rated ≥ 120 lb pull-out for durable, code-ready assemblies.
- Fast Retrofit Install: Snaps common 25-gauge hat channel into place with a single fastener — turns a shim-and-block retrofit into a repeatable production task.
- Clean, Low-Profile Result: Compact profile stays inside standard framing depth, so it drops into tight soffits, bulkheads, and shaft-wall retrofits with no headroom penalty.
Online orders up to 4,999 pieces. For anything larger, call (415) 864-4440 and we'll price the project with you.
MBF Specifications
- Width
- 1-1/4 in
- Height
- 1 in
- Depth
- 4-7/8 in
- Max spacing
- Clips ≤ 48" on center
- Max load
- Use fasteners ≥ 120 lb pull-out
- Adjustment range
- 0 – 3/4 in at 3/16" increments (4 positions)
Hat channel specs
- Gauge
- 25 gauge with hemmed edge
- Depth
- 7/8 in
- Width top
- 1 1/4 in
- Width bottom
- 2 1/2 in
MBF Project Calculator
Enter your surface square footage. We'll return a clip, channel, and screw count for your project — calculations run on our servers so estimates stay accurate as our field data improves.
Adds MLV over Good for a denser limp-mass layer.
Estimates use clip spacing ≤ 48" o.c. and hat channel ≤ 24" o.c. A 10% buffer is recommended for corners and re-work.
STC Gauge
Compare how the MBF performs across assembly tiers. Select an assembly below to see the resulting STC score.
MBF + channel system + MLV + double 5/8" drywall with Green Glue between layers, insulated stud wall.
- STC 30-39: Loud speech clearly audible next room.
- STC 40-49: Loud speech muffled — normal residential wall.
- STC 50-59: Loud speech barely audible; suitable for offices & multi-family.
- STC 60+: Approaches studio-grade isolation.
How MBF compares
| Model | Primary Use | Hat Channel | Typical Layout | Isolation Element |
|---|---|---|---|---|
| MBFthis | Adjustable leveling clip (rigid — non-resilient) | 25-gauge 7/8" | ≤ 48" o.c. clip · ≤ 24" o.c. hat | None (rigid leveling only — see MBFR for resilient) |
| MBFR | Adjustable leveling clip with resilient isolator | 25-gauge 7/8" | ≤ 48" o.c. clip · ≤ 24" o.c. hat | Thermoplastic rubber isolator |
| A237 | Rigid direct-fix furring bracket | 7/8" or 1 1/2" | ≤ 48" o.c. clip · ≤ 24" o.c. hat | None (rigid mount) |
Applicable Assemblies
See where the MBF fits — from budget baseline to studio-grade isolation.
Best — Clips + Insulation + MLV + Double Drywall + Green Glue
Stud wall · insulation · MBF + channel system · MLV · 5/8" drywall · Green Glue · 5/8" drywall · acoustic sealant.
Better — Clips + Double Drywall + Green Glue
Stud wall · insulation · MBF + channel system · 5/8" drywall · Green Glue · 5/8" drywall · acoustic sealant.
Good — Clips + Silent FX Drywall
Stud wall · insulation · MBF + channel system · Silent FX damped drywall · acoustic sealant.
