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Queen excluder model langstroth made of plastic measuring 421x506 millimeters in brown. They stand out for being very light and easy to transport in the field and easy to install and collect the apiary. Long duration. Dark brown, veins parallel to the broad side. Rounded edges and a good finish to avoid injuring bees. At room temperature, the plastic does not expand or deform. They are easily cleaned from propolis with alcohol, caustic soda or boiling water. Available loose and in boxes of 50 units.
Less weight than steel ones.
Resistant to oxalic or formic acid.
Vapor resistant up to 119ºC maximum.
Weight: 240 grams.
Measurements: 421x506mm (Langstroth and dadant US).