Doors - Your Biggest Sound Leak (SIM)

Doors are the weakest point in any soundproof room—even the best sound-isolating walls are compromised by poorly sealed or lightweight doors. The SIM Soundproof Door System solves this with carefully engineered options that combine massive door slabs and specialized acoustic seals.

• Compatible with solid core interior slabs and exterior sealed jambs
• Customizable with automatic door bottoms and acoustic door stops
• Ideal for home theaters, studios, and offices
• Supports 1¾” thick slabs for maximum sound control
• Perfect for DIYers or pro installers looking for code-friendly isolation

🔒 Why Choose SIM Door Kits?

• Achieve higher STC ratings (low 40s with a single door, higher with airlock setups)
• Create communicating door systems or add a small lobby/vestibule for added isolation
• Solutions available for single or double door configurations
• Eliminate sound flanking through gaps, jambs, and thresholds

🛠 Use with:

• Soundproof walls up to STC 70+
• Studio & theater entry doors
• Retrofit projects using pre-hung or custom-mount doors

Build smarter, quieter rooms with the SIM door solution—combining mass, seal, and strategy for true sound control.