Thermwell V73H Shrink Window Insulator Kit 42x62 in

Product Description

The THERMWELL V73H is an indoor shrink window insulator kit designed to reduce drafts and heat loss through single windows up to 3 feet by 5 feet. The kit includes a crystal-clear plastic film sheet measuring 42 inches by 62 inches that shrinks tight and wrinkle-free using a standard handheld hair dryer. Double-face tape is included for secure attachment to the window frame. This type of product is typically installed by homeowners, property managers, or HVAC technicians as a low-cost weatherization measure during heating season.

The V73H is suited for residential and light commercial applications where temporary or seasonal window insulation is needed. The film attaches directly to the interior window frame and creates a dead-air buffer zone that improves thermal performance at single-pane or poorly sealed windows. The included double-face tape is compatible with metal, painted wood, varnished wood, and vinyl-clad frames, making it adaptable to a wide range of window types found in older residential construction.

Key Features

• Crystal-clear plastic film shrinks tight and wrinkle-free with a handheld hair dryer
• Covers one window up to 3 feet by 5 feet (42 inches by 62 inches sheet)
• Double-face tape included for frameless, adhesive-based installation
• Compatible with metal, painted wood, varnished wood, and vinyl-clad window frames
• Interior installation keeps the film protected from outdoor weather exposure

Compatibility

Designed as an OEM-style replacement-style insulator kit for single interior windows up to 3 feet by 5 feet with metal, painted wood, varnished wood, or vinyl-clad frames.

Installation Notes

Installation does not require licensed trade work and is typically performed by a homeowner or building maintenance technician. Clean the window frame thoroughly before applying the double-face tape to ensure a strong bond. Apply the plastic film over the tape, then use a handheld hair dryer on a low-to-medium heat setting to shrink the film evenly from the center outward. Do not use an open-flame heat source or high-heat setting, as this can damage the film or the frame finish.