Erva’s clamp on bird bath is excellent for attaching to decks and railings as this light weight unit makes it ideal for decks and patios. The 14 inch durable polypropolene bowl sets in a powder coated steel base. The non-porous bowl cleans easily and withstands extremely cold temperatures. May use with any bird bath heater or de-icer, or use the 14 inch heated Erva insert during the winter. (Sold Seperately) Weight: 6 lbs.