[**brk-client**](../README.md) *** [brk-client](../globals.md) / MempoolBlock # Interface: MempoolBlock Defined in: [Developer/brk/modules/brk-client/index.js:627](https://github.com/bitcoinresearchkit/brk/blob/1ddb3385e298de5498f1b3bf48bb88ed008d8e17/modules/brk-client/index.js#L627) ## Properties ### blockSize > **blockSize**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:628](https://github.com/bitcoinresearchkit/brk/blob/1ddb3385e298de5498f1b3bf48bb88ed008d8e17/modules/brk-client/index.js#L628) Total block size in weight units *** ### blockVSize > **blockVSize**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:629](https://github.com/bitcoinresearchkit/brk/blob/1ddb3385e298de5498f1b3bf48bb88ed008d8e17/modules/brk-client/index.js#L629) Total block virtual size in vbytes *** ### feeRange > **feeRange**: `number`[] Defined in: [Developer/brk/modules/brk-client/index.js:633](https://github.com/bitcoinresearchkit/brk/blob/1ddb3385e298de5498f1b3bf48bb88ed008d8e17/modules/brk-client/index.js#L633) Fee rate range: [min, 10%, 25%, 50%, 75%, 90%, max] *** ### medianFee > **medianFee**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:632](https://github.com/bitcoinresearchkit/brk/blob/1ddb3385e298de5498f1b3bf48bb88ed008d8e17/modules/brk-client/index.js#L632) Median fee rate in sat/vB *** ### nTx > **nTx**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:630](https://github.com/bitcoinresearchkit/brk/blob/1ddb3385e298de5498f1b3bf48bb88ed008d8e17/modules/brk-client/index.js#L630) Number of transactions in the projected block *** ### totalFees > **totalFees**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:631](https://github.com/bitcoinresearchkit/brk/blob/1ddb3385e298de5498f1b3bf48bb88ed008d8e17/modules/brk-client/index.js#L631) Total fees in satoshis