M-d Building Products 04184 Window Insulation Kit 42x62 in

Product Description

The M-D Building Products 04184 is a shrink-seal indoor window insulation kit designed to reduce cold drafts and heat loss through single-pane and older double-pane windows. The kit includes a crystal-clear plastic film that mounts using double-faced tape and shrinks tight with a standard hair dryer, creating an insulating dead-air barrier between the film and the glass. Applied correctly, the film can increase the effective R-value of a window by up to 90 percent. The kit covers a window opening up to 42 inches wide by 62 inches tall. Installation requires no special tools and suits residential retrofit applications.

This kit is intended for interior installation on drafty windows in residential settings. It is commonly used in older homes, rental units, and commercial spaces where window replacement is not practical. Typical applications include single-hung, double-hung, and casement windows in living areas, bedrooms, and utility spaces. The film remains optically clear after shrinking, allowing normal light transmission through the treated window. It is a seasonal product most often installed before heating season and removed in spring.

Key Features

• Crystal-clear film maintains visibility and light transmission after installation
• Covers window openings up to 42 inches x 62 inches
• Increases window R-value by up to 90 percent when properly applied
• Installs with double-faced tape and a standard hair dryer — no special tools required
• Creates a dead-air insulating barrier that reduces cold drafts and heat loss
• Designed for seasonal interior use and easy removal

Compatibility

Designed as an interior shrink-film insulation solution for standard residential windows with an opening no larger than 42 inches wide by 62 inches tall.

Installation Notes

Installation is performed from the interior of the building and does not require licensed trade work. Clean the window frame surface thoroughly before applying the double-faced tape to ensure a secure bond. Apply the film over the taped frame, then use a hair dryer on a low-to-medium heat setting to shrink the film smooth and taut — keep the dryer moving to avoid overheating or tearing the film. Do not use an open-flame heat source or heat gun in place of a hair dryer.

Technical Specifications

• Coverage Size: 42 inches x 62 inches
• Weight: 0.228 pounds
• R-Value Improvement: Up to 90 percent increase
• Unit of Measure: Each
• UPC: 00043374041842

Standard Information

• Brand: M-D Building Products
• Manufacturer Part Number: 04184