diff --git a/bits/67_wsxml.js b/bits/67_wsxml.js
index 81a9c4d..dd8ee8b 100644
--- a/bits/67_wsxml.js
+++ b/bits/67_wsxml.js
@@ -323,6 +323,9 @@ function write_ws_xml(idx/*:number*/, opts, wb/*:Workbook*/, rels)/*:string*/ {
 	o[o.length] = (writextag('sheetPr', null, {'codeName': escapexml(wb.SheetNames[idx])}));
 	o[o.length] = (writextag('dimension', null, {'ref': ref}));
 
+	/* TODO: store in WB, process styles */
+	if(opts.sheetFormat) o[o.length] = (writextag('sheetFormatPr', null, {defaultRowHeight:opts.sheetFormat.defaultRowHeight||'16', baseColWidth:opts.sheetFormat.baseColWidth||'10' }))
+
 	if(ws['!cols'] !== undefined && ws['!cols'].length > 0) o[o.length] = (write_ws_xml_cols(ws, ws['!cols']));
 	o[sidx = o.length] = '<sheetData/>';
 	ws['!links'] = [];
diff --git a/xlsx.flow.js b/xlsx.flow.js
index d3c9c34..4ef78ee 100644
--- a/xlsx.flow.js
+++ b/xlsx.flow.js
@@ -9224,6 +9224,9 @@ function write_ws_xml(idx/*:number*/, opts, wb/*:Workbook*/, rels)/*:string*/ {
 	o[o.length] = (writextag('sheetPr', null, {'codeName': escapexml(wb.SheetNames[idx])}));
 	o[o.length] = (writextag('dimension', null, {'ref': ref}));
 
+	/* TODO: store in WB, process styles */
+	if(opts.sheetFormat) o[o.length] = (writextag('sheetFormatPr', null, {defaultRowHeight:opts.sheetFormat.defaultRowHeight||'16', baseColWidth:opts.sheetFormat.baseColWidth||'10' }))
+
 	if(ws['!cols'] !== undefined && ws['!cols'].length > 0) o[o.length] = (write_ws_xml_cols(ws, ws['!cols']));
 	o[sidx = o.length] = '<sheetData/>';
 	ws['!links'] = [];
diff --git a/xlsx.js b/xlsx.js
index b153435..72896aa 100644
--- a/xlsx.js
+++ b/xlsx.js
@@ -9169,6 +9169,9 @@ function write_ws_xml(idx, opts, wb, rels) {
 	o[o.length] = (writextag('sheetPr', null, {'codeName': escapexml(wb.SheetNames[idx])}));
 	o[o.length] = (writextag('dimension', null, {'ref': ref}));
 
+	/* TODO: store in WB, process styles */
+	if(opts.sheetFormat) o[o.length] = (writextag('sheetFormatPr', null, {defaultRowHeight:opts.sheetFormat.defaultRowHeight||'16', baseColWidth:opts.sheetFormat.baseColWidth||'10' }))
+
 	if(ws['!cols'] !== undefined && ws['!cols'].length > 0) o[o.length] = (write_ws_xml_cols(ws, ws['!cols']));
 	o[sidx = o.length] = '<sheetData/>';
 	ws['!links'] = [];