Product Description
Milwaukee Smooth Blade Insulation Knife
Model Number: 48-22-1921
The Milwaukee 48-22-1921 is the Smooth Blade Insulation Knife — a specialty fixed-blade knife designed specifically for cutting fiberglass batt insulation, mineral wool insulation, foam board insulation, and other building insulation materials in residential and commercial insulation installation work. The long, smooth blade provides the extended cutting reach needed to cut through the full thickness of insulation batts in a single stroke — standard utility knives with short blades require multiple strokes or partial cuts that compress and tear insulation rather than cutting it cleanly through the full depth. The smooth blade profile slides through insulation materials cleanly without the fiber-catching and snagging that serrated blades cause in the loose, fibrous structure of glass fiber and mineral wool insulation.
Milwaukee designs the insulation knife with a blade length appropriate for the full thickness range of standard residential insulation materials — from 3-1/2 in. wall batts through 6 in. and 8 in. deep cavity floor and attic insulation where a full-depth single-stroke cut produces the cleanest, straightest cut edge for tight installation fit at wall plates, blocking, and obstacles that partial cuts and saws cannot match for installation quality. The fixed blade provides the always-ready cutting edge for the continuous cutting pace of production insulation installation work where retractable and folding blades slow the workflow compared to the fixed blade's immediate deployment. Milwaukee builds the insulation knife handle for the sustained one-hand grip and cutting force of production insulation installation throughout a full workday.
See Milwaukee's complete specialty knife lineup for all available fixed-blade and folding configurations for trade-specific cutting applications.
Features
- Long smooth blade for full-depth single-stroke cuts through insulation batts
- Smooth profile slides through fibrous insulation without snagging or tearing
- Fixed blade for immediate deployment throughout production insulation installation
- Covers full thickness range from wall batts through deep cavity insulation
- Clean straight cuts for tight fit at plates, blocking, and penetrations
Specifications
- Blade Profile: Smooth, Fixed
- Application: Fiberglass Batt, Mineral Wool, and Foam Board Insulation Cutting
Includes
- (1) Milwaukee 48-22-1921 Smooth Blade Insulation Knife
