Thermwell Products Co.

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Thermwell Products Co.
$11.75 $7.88

Crystal clear plastic sheet that shrinks tight and wrinkle free with an ordinary hand-held hair dryer. Easily installed on metal, ...painted or varnished, wood or vinyl clad frames with double faced tape. Increases R-value of single pane windows up to... read more

See at Walmart
Thermwell Products Co.
$11.75 $7.88

Crystal clear plastic sheet that shrinks tight and wrinkle free with an ordinary hand-held hair dryer. Easily installed on metal, ...painted or varnished, wood or vinyl clad frames with double faced tape. Increases R-value of single pane windows up to... read more

See at Walmart
Thermwell Products Co.
$1.00

For central forced air heating and cooling systems. Heavy-duty clear plastic with magnets to hold in place. Replaceable dust filte...r included in each unit. Fits registers from 10" to 14" wideNo. HD13Register Size: 10" - 14"Material: Heavy Duty PlasticColor: Clear read more

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