[**brk-client**](../README.md) *** [brk-client](../globals.md) / MempoolBlock # Interface: MempoolBlock Defined in: [Developer/brk/modules/brk-client/index.js:595](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L595) ## Properties ### blockSize > **blockSize**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:596](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L596) Total block size in weight units *** ### blockVSize > **blockVSize**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:597](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L597) Total block virtual size in vbytes *** ### feeRange > **feeRange**: `number`[] Defined in: [Developer/brk/modules/brk-client/index.js:601](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L601) Fee rate range: [min, 10%, 25%, 50%, 75%, 90%, max] *** ### medianFee > **medianFee**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:600](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L600) Median fee rate in sat/vB *** ### nTx > **nTx**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:598](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L598) Number of transactions in the projected block *** ### totalFees > **totalFees**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:599](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L599) Total fees in satoshis