BOSS - 03866BR10 - 334 Minimal Expanding Gun Foam, 24 oz.

Item: BOSS33424
MFG: 03866BR10
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Minimal Expanding Gun Foam, 24 oz.


Boss® 334 Window & Door Minimal Expanding Gun Foam Is A One-Component, Ready To Use Polyurethane Foam, Formulated To Seal The Gap Around Window and Door Frame and The Rough Opening. Boss® 334 Expands To Generate An Effective Seal, and When Used Properly Is Proven Not To Distort or Bow Window and Door Frames.


  • Installing Of Window and Door Frames
  • Filling Of Cavities
  • Sealing Of All Openings In Roof Constructions
  • Creation Of A Sound Proof Screen
  • Mounting and Sealing Of Window and Door Frames
  • Connecting Of Insulation Materials and Roof Constructions
  • Application Of A Sound Proofing Layer On Motors
  • Improving Thermical Isolation In Cooling Systems


  • Aama 812-04 Approved
  • Cfc Propellant Free
  • Excellent Adhesion On Most Substrates (Except Teflon, PE and PP)
  • High Thermal and Acoustical Insulation
  • Very Good Filling Capacities
  • Excellent Mounting Capacities
  • Excellent Stability (No Shrink or Post Expansion)
  • Very Precise Application Due To The Foam Gun System
  • Low Pressure Build, Reducing The Chance Of Bowing
  • Voc Compliant

California residents: see Proposition 65 Warning

Features and Specification

Height 7.4300
Includes Straws and Adaptors
Length 2.5000
Composition Polyurethane Foam
Dry Time 12 HOURS
EAN 0787930334244
Functions Sealant
Fire Rating Not Provided
Flash Point -21° C
For Use With • Installing of window and door frames • Filling of cavities • Sealing of all openings in roof constructions • Creation of a soundproof screen • Mounting and sealing of window and door frames • Connecting of insulation materials and roof constructions • Application of a soundproofing layer on motors • Improving thermical isolation in cooling systems
Width 2.5000
Storage Temperature <70°F
Temperature Range -40°F to 200°F (-40°C to 93.3°C)
Tensile Strength 15 PSI
Type General Purpose
UL Listed No
UL Recognized Yes
UPC 787930334244
UV Resistant No
Viscosity Not Provided
Standards ASTM E-2112, ASTM283, ASTM E-331, ASTM E-547, ASTM C-1620, ASTM E-84 UL 723 Flame Spread 15, Smoke Developed 35
Solvent No
Ratings Flame Spread - 10; Smoke Developed - 30
Package Height 10.5512
Package Length 11.0236
Package Weight 21.6000
Package Width 8.6614
Solids Content Not Provided
Service Temperature -40°F to 200°F (-40°C to 93.3°C)
Shelf Life 1 Year from the date of shipment
Size 24 Ounce
Comments/Notes Can Contribute Credits
Weight 1.8000
Application A Ready To Use Polyurethane Foam, Formulated To Seal Gaps And Cracks. Expands To Generate An Effective Seal, Without Bowing Frames, Or Overexpanding Beyond The Intended Void.
Application Temperature 40°F to 115°F (4.4°C to 46.1°C)
Approvals AAMA 812-04
Base Polyurethane foam
Brand BOSS®


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