This deep water overflow cover is the perfect tub drain for your clawfoot bathtub. This vintage accessory adds 1-3 inches of water depth to your tub. It comes ready to use with no installation tools needed. 1" diameter hole at top of unit releases excess water into overflow outlet. Measurements are inside diameter: 4"; vverall diameter 6". Feel free to contact us if you have any questions or concerns. As always enjoy free shipping when shopping at vintagetub.com PRODUCT FEATURES Adds 1-3 inches of water depth to your tub Ready to use - no installation tools needed 1" diameter hole at top of unit releases excess water into overflow outlet Please note: Tub spout must project a minimum of 2" in order to clear the cover Metal overflow plate shown above not included UPS Shipping Included on this item within the 48 States. SPECIFICATIONS 12 suction cups hold it in placeover the overflow opening (suction cups work best when dampened first) Made of clear vinyl treated with fungicide to resist mildew Inside diameter: 4"; Overall diameter: 6" IMPORTANT: If you have a drainwith a chain and stopper, you willeither have to disconnect the chain OR cut the rim around the 1" diameter hole to allow the stopper to pass through Top View of Unit RELATED ITEMS Strom Plumbing Handshower Faucet Bathtub Caddies Towel Warmers