Hello,

The housing is a 23 gauge steel. The product is returnable, below is our return policy.

• You may return your unused item in its original condition and packaging within 20 days of receipt.
• Please request a return by clicking on the "Return Item" button for your order on https://www.houzz.com/browseOrders.
• Unless
  your item is received damaged, or there was some error on our part, you
  will be responsible for all return shipping costs.
• Because
  refunds will not be issued in full for items damaged in return shipping
  or returns that are never received, we highly recommend that you insure
  all return shipments and provide Houzz Support with the shipment
  tracking number.

• Ensure everything is returned in its
  original condition, this includes packaging, manuals, accessories,
  original crate etc. General returns, a restocking fee of 25% will apply
  except in the following scenarios: Initially received defective
  merchandise. Wrong unit was shipped. Returns will be inspected by seller
  once received, if item or packaging is deemed unusable, seller reserves
  the right to deduct from the refund amount. We do not accept returns on
  items installed or prepped for installation